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plugin.html
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<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Interface: Plugin<TType, O> | Chart.js</title>
<meta name="generator" content="VuePress 1.8.2">
<link rel="icon" href="/docs/3.2.0/favicon.ico">
<meta name="description" content="Open source HTML5 Charts for your website">
<link rel="preload" href="/docs/3.2.0/assets/css/0.styles.954f0f15.css" as="style"><link rel="preload" href="/docs/3.2.0/assets/js/app.eecca120.js" as="script"><link rel="preload" href="/docs/3.2.0/assets/js/2.497f764b.js" as="script"><link rel="preload" href="/docs/3.2.0/assets/js/84.505f1654.js" as="script"><link rel="prefetch" href="/docs/3.2.0/assets/js/10.07263a2b.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/100.e51f500f.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/101.4d5d2fc1.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/102.738de75e.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/103.ac1044cf.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/104.b24063c3.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/105.a50b27b7.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/106.15182f3d.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/107.d035245b.js"><link rel="prefetch" href="/docs/3.2.0/assets/js/108.9bb75417.js"><link rel="prefetch" 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GitHub
<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>API</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/docs/3.2.0/api/" aria-current="page" class="sidebar-link">Exports</a></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Enumerations</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading"><span>Classes</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable is-sub-group depth-1"><p class="sidebar-heading open"><span>Interfaces</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/docs/3.2.0/api/interfaces/activedatapoint.html" class="sidebar-link">ActiveDataPoint</a></li><li><a href="/docs/3.2.0/api/interfaces/activeelement.html" class="sidebar-link">ActiveElement</a></li><li><a href="/docs/3.2.0/api/interfaces/animationevent.html" class="sidebar-link">AnimationEvent</a></li><li><a href="/docs/3.2.0/api/interfaces/arcborderradius.html" class="sidebar-link">ArcBorderRadius</a></li><li><a href="/docs/3.2.0/api/interfaces/arcelement.html" class="sidebar-link">ArcElement</a></li><li><a href="/docs/3.2.0/api/interfaces/archoveroptions.html" class="sidebar-link">ArcHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/arcoptions.html" class="sidebar-link">ArcOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/arcprops.html" class="sidebar-link">ArcProps</a></li><li><a href="/docs/3.2.0/api/interfaces/barcontrollerchartoptions.html" class="sidebar-link">BarControllerChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/barcontrollerdatasetoptions.html" class="sidebar-link">BarControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/barelement.html" class="sidebar-link">BarElement</a></li><li><a href="/docs/3.2.0/api/interfaces/barhoveroptions.html" class="sidebar-link">BarHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/baroptions.html" class="sidebar-link">BarOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/barprops.html" class="sidebar-link">BarProps</a></li><li><a href="/docs/3.2.0/api/interfaces/borderradius.html" class="sidebar-link">BorderRadius</a></li><li><a href="/docs/3.2.0/api/interfaces/bubblecontrollerdatasetoptions.html" class="sidebar-link">BubbleControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html" class="sidebar-link">BubbleDataPoint</a></li><li><a href="/docs/3.2.0/api/interfaces/cartesianscaleoptions.html" class="sidebar-link">CartesianScaleOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/cartesianscaletyperegistry.html" class="sidebar-link">CartesianScaleTypeRegistry</a></li><li><a href="/docs/3.2.0/api/interfaces/chartarea.html" class="sidebar-link">ChartArea</a></li><li><a href="/docs/3.2.0/api/interfaces/chartcomponent.html" class="sidebar-link">ChartComponent</a></li><li><a href="/docs/3.2.0/api/interfaces/chartconfiguration.html" class="sidebar-link">ChartConfiguration</a></li><li><a href="/docs/3.2.0/api/interfaces/chartdata.html" class="sidebar-link">ChartData</a></li><li><a href="/docs/3.2.0/api/interfaces/chartdatasetproperties.html" class="sidebar-link">ChartDatasetProperties</a></li><li><a href="/docs/3.2.0/api/interfaces/chartevent.html" class="sidebar-link">ChartEvent</a></li><li><a href="/docs/3.2.0/api/interfaces/chartmeta.html" class="sidebar-link">ChartMeta</a></li><li><a href="/docs/3.2.0/api/interfaces/charttyperegistry.html" class="sidebar-link">ChartTypeRegistry</a></li><li><a href="/docs/3.2.0/api/interfaces/commonelementoptions.html" class="sidebar-link">CommonElementOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/commonhoveroptions.html" class="sidebar-link">CommonHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/complexfilltarget.html" class="sidebar-link">ComplexFillTarget</a></li><li><a href="/docs/3.2.0/api/interfaces/controllerdatasetoptions.html" class="sidebar-link">ControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/corechartoptions.html" class="sidebar-link">CoreChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/coreinteractionoptions.html" class="sidebar-link">CoreInteractionOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/corescaleoptions.html" class="sidebar-link">CoreScaleOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/datasetcontrollerchartcomponent.html" class="sidebar-link">DatasetControllerChartComponent</a></li><li><a href="/docs/3.2.0/api/interfaces/dateadapter.html" class="sidebar-link">DateAdapter</a></li><li><a href="/docs/3.2.0/api/interfaces/defaults.html" class="sidebar-link">Defaults</a></li><li><a href="/docs/3.2.0/api/interfaces/doughnutanimationoptions.html" class="sidebar-link">DoughnutAnimationOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/doughnutcontroller.html" class="sidebar-link">DoughnutController</a></li><li><a href="/docs/3.2.0/api/interfaces/doughnutcontrollerchartoptions.html" class="sidebar-link">DoughnutControllerChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/doughnutcontrollerdatasetoptions.html" class="sidebar-link">DoughnutControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/element.html" class="sidebar-link">Element</a></li><li><a href="/docs/3.2.0/api/interfaces/elementchartoptions.html" class="sidebar-link">ElementChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/elementoptionsbytype.html" class="sidebar-link">ElementOptionsByType</a></li><li><a href="/docs/3.2.0/api/interfaces/extendedplugin.html" class="sidebar-link">ExtendedPlugin</a></li><li><a href="/docs/3.2.0/api/interfaces/fillercontrollerdatasetoptions.html" class="sidebar-link">FillerControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/filleroptions.html" class="sidebar-link">FillerOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/fontspec.html" class="sidebar-link">FontSpec</a></li><li><a href="/docs/3.2.0/api/interfaces/gridlineoptions.html" class="sidebar-link">GridLineOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/interactionitem.html" class="sidebar-link">InteractionItem</a></li><li><a href="/docs/3.2.0/api/interfaces/interactionmodemap.html" class="sidebar-link">InteractionModeMap</a></li><li><a href="/docs/3.2.0/api/interfaces/interactionoptions.html" class="sidebar-link">InteractionOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/layoutitem.html" class="sidebar-link">LayoutItem</a></li><li><a href="/docs/3.2.0/api/interfaces/legendelement.html" class="sidebar-link">LegendElement</a></li><li><a href="/docs/3.2.0/api/interfaces/legenditem.html" class="sidebar-link">LegendItem</a></li><li><a href="/docs/3.2.0/api/interfaces/legendoptions.html" class="sidebar-link">LegendOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/linecontrollerchartoptions.html" class="sidebar-link">LineControllerChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/linecontrollerdatasetoptions.html" class="sidebar-link">LineControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/lineelement.html" class="sidebar-link">LineElement</a></li><li><a href="/docs/3.2.0/api/interfaces/linehoveroptions.html" class="sidebar-link">LineHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/lineoptions.html" class="sidebar-link">LineOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/lineprops.html" class="sidebar-link">LineProps</a></li><li><a href="/docs/3.2.0/api/interfaces/parsingoptions.html" class="sidebar-link">ParsingOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/plugin.html" aria-current="page" class="active sidebar-link">Plugin</a></li><li><a href="/docs/3.2.0/api/interfaces/pluginchartoptions.html" class="sidebar-link">PluginChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/pluginoptionsbytype.html" class="sidebar-link">PluginOptionsByType</a></li><li><a href="/docs/3.2.0/api/interfaces/point.html" class="sidebar-link">Point</a></li><li><a href="/docs/3.2.0/api/interfaces/pointelement.html" class="sidebar-link">PointElement</a></li><li><a href="/docs/3.2.0/api/interfaces/pointhoveroptions.html" class="sidebar-link">PointHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/pointoptions.html" class="sidebar-link">PointOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/pointprefixedhoveroptions.html" class="sidebar-link">PointPrefixedHoverOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/pointprefixedoptions.html" class="sidebar-link">PointPrefixedOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/pointprops.html" class="sidebar-link">PointProps</a></li><li><a href="/docs/3.2.0/api/interfaces/polarareacontroller.html" class="sidebar-link">PolarAreaController</a></li><li><a href="/docs/3.2.0/api/interfaces/polarareacontrollerchartoptions.html" class="sidebar-link">PolarAreaControllerChartOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/polarareacontrollerdatasetoptions.html" class="sidebar-link">PolarAreaControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/radarcontrollerdatasetoptions.html" class="sidebar-link">RadarControllerDatasetOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/radiallinearscale.html" class="sidebar-link">RadialLinearScale</a></li><li><a href="/docs/3.2.0/api/interfaces/radialscaletyperegistry.html" class="sidebar-link">RadialScaleTypeRegistry</a></li><li><a href="/docs/3.2.0/api/interfaces/registry.html" class="sidebar-link">Registry</a></li><li><a href="/docs/3.2.0/api/interfaces/scaletyperegistry.html" class="sidebar-link">ScaleTypeRegistry</a></li><li><a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html" class="sidebar-link">ScatterDataPoint</a></li><li><a href="/docs/3.2.0/api/interfaces/scriptablecontext.html" class="sidebar-link">ScriptableContext</a></li><li><a href="/docs/3.2.0/api/interfaces/scriptablelinesegmentcontext.html" class="sidebar-link">ScriptableLineSegmentContext</a></li><li><a href="/docs/3.2.0/api/interfaces/scriptablescalecontext.html" class="sidebar-link">ScriptableScaleContext</a></li><li><a href="/docs/3.2.0/api/interfaces/scriptabletooltipcontext.html" class="sidebar-link">ScriptableTooltipContext</a></li><li><a href="/docs/3.2.0/api/interfaces/segment.html" class="sidebar-link">Segment</a></li><li><a href="/docs/3.2.0/api/interfaces/tick.html" class="sidebar-link">Tick</a></li><li><a href="/docs/3.2.0/api/interfaces/tickoptions.html" class="sidebar-link">TickOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/timescale.html" class="sidebar-link">TimeScale</a></li><li><a href="/docs/3.2.0/api/interfaces/titleoptions.html" class="sidebar-link">TitleOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/tooltipcallbacks.html" class="sidebar-link">TooltipCallbacks</a></li><li><a href="/docs/3.2.0/api/interfaces/tooltipitem.html" class="sidebar-link">TooltipItem</a></li><li><a href="/docs/3.2.0/api/interfaces/tooltiplabelstyle.html" class="sidebar-link">TooltipLabelStyle</a></li><li><a href="/docs/3.2.0/api/interfaces/tooltipmodel.html" class="sidebar-link">TooltipModel</a></li><li><a href="/docs/3.2.0/api/interfaces/tooltipoptions.html" class="sidebar-link">TooltipOptions</a></li><li><a href="/docs/3.2.0/api/interfaces/typedregistry.html" class="sidebar-link">TypedRegistry</a></li><li><a href="/docs/3.2.0/api/interfaces/visualelement.html" class="sidebar-link">VisualElement</a></li></ul></section></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="interface-plugin-ttype-o"><a href="#interface-plugin-ttype-o" class="header-anchor">#</a> Interface: Plugin<TType, O></h1> <h2 id="type-parameters"><a href="#type-parameters" class="header-anchor">#</a> Type parameters</h2> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Default</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>TType</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/#charttype"><em>ChartType</em></a></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/#charttype"><em>ChartType</em></a></td></tr> <tr><td style="text-align:left;"><code>O</code></td> <td style="text-align:left;">-</td> <td style="text-align:left;">AnyObject</td></tr></tbody></table> <h2 id="hierarchy"><a href="#hierarchy" class="header-anchor">#</a> Hierarchy</h2> <ul><li><p><a href="/docs/3.2.0/api/interfaces/extendedplugin.html"><em>ExtendedPlugin</em></a><TType></p> <p>↳ <strong>Plugin</strong></p></li></ul> <h2 id="properties"><a href="#properties" class="header-anchor">#</a> Properties</h2> <h3 id="id"><a href="#id" class="header-anchor">#</a> id</h3> <p>• <strong>id</strong>: <em>string</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L746" target="_blank" rel="noopener noreferrer">index.esm.d.ts:746<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <h2 id="methods"><a href="#methods" class="header-anchor">#</a> Methods</h2> <h3 id="afterbuildticks"><a href="#afterbuildticks" class="header-anchor">#</a> afterBuildTicks</h3> <p>▸ <code>Optional</code><strong>afterBuildTicks</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>scale</code>: <a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after scale has build its ticks. This hook is called separately for each scale in the chart.</p> <h4 id="parameters"><a href="#parameters" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.scale</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>></td> <td style="text-align:left;">The scale.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L905" target="_blank" rel="noopener noreferrer">index.esm.d.ts:905<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdatalimits"><a href="#afterdatalimits" class="header-anchor">#</a> afterDataLimits</h3> <p>▸ <code>Optional</code><strong>afterDataLimits</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>scale</code>: <a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after scale data limits are calculated. This hook is called separately for each scale in the chart.</p> <h4 id="parameters-2"><a href="#parameters-2" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.scale</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>></td> <td style="text-align:left;">The scale.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L889" target="_blank" rel="noopener noreferrer">index.esm.d.ts:889<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdatasetdraw"><a href="#afterdatasetdraw" class="header-anchor">#</a> afterDatasetDraw</h3> <p>▸ <code>Optional</code><strong>afterDatasetDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>index</code>: <em>number</em> ; <code>meta</code>: <a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> datasets at the given <code>args.index</code> have been drawn
(datasets are drawn in the reverse order). Note that this hook will not be called
if the datasets drawing has been previously cancelled.</p> <h4 id="parameters-3"><a href="#parameters-3" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.index</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">The dataset index.</td></tr> <tr><td style="text-align:left;"><code>args.meta</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>></td> <td style="text-align:left;">The dataset metadata.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L987" target="_blank" rel="noopener noreferrer">index.esm.d.ts:987<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdatasetupdate"><a href="#afterdatasetupdate" class="header-anchor">#</a> afterDatasetUpdate</h3> <p>▸ <code>Optional</code><strong>afterDatasetUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>false</em> ; <code>index</code>: <em>number</em> ; <code>meta</code>: <a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>> ; <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> datasets at the given <code>args.index</code> has been updated. Note
that this hook will not be called if the datasets update has been previously cancelled.</p> <h4 id="parameters-4"><a href="#parameters-4" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>false</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.index</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">The dataset index.</td></tr> <tr><td style="text-align:left;"><code>args.meta</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>></td> <td style="text-align:left;">The dataset metadata.</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L864" target="_blank" rel="noopener noreferrer">index.esm.d.ts:864<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdatasetsdraw"><a href="#afterdatasetsdraw" class="header-anchor">#</a> afterDatasetsDraw</h3> <p>▸ <code>Optional</code><strong>afterDatasetsDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O, <code>cancelable</code>: <em>false</em>): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> datasets have been drawn. Note that this hook
will not be called if the datasets drawing has been previously cancelled.</p> <h4 id="parameters-5"><a href="#parameters-5" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr> <tr><td style="text-align:left;"><code>cancelable</code></td> <td style="text-align:left;"><em>false</em></td> <td style="text-align:left;">-</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L964" target="_blank" rel="noopener noreferrer">index.esm.d.ts:964<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdatasetsupdate"><a href="#afterdatasetsupdate" class="header-anchor">#</a> afterDatasetsUpdate</h3> <p>▸ <code>Optional</code><strong>afterDatasetsUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> ; <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> datasets have been updated. Note that this hook
will not be called if the datasets update has been previously cancelled.</p> <p><strong><code>since</code></strong> version 2.1.5</p> <h4 id="parameters-6"><a href="#parameters-6" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L841" target="_blank" rel="noopener noreferrer">index.esm.d.ts:841<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterdraw"><a href="#afterdraw" class="header-anchor">#</a> afterDraw</h3> <p>▸ <code>Optional</code><strong>afterDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> has been drawn. Note that this hook will not be called
if the drawing has been previously cancelled.</p> <h4 id="parameters-7"><a href="#parameters-7" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L947" target="_blank" rel="noopener noreferrer">index.esm.d.ts:947<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterevent"><a href="#afterevent" class="header-anchor">#</a> afterEvent</h3> <p>▸ <code>Optional</code><strong>afterEvent</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>false</em> ; <code>changed?</code>: <em>boolean</em> ; <code>event</code>: <a href="/docs/3.2.0/api/interfaces/chartevent.html"><em>ChartEvent</em></a> ; <code>replay</code>: <em>boolean</em> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>event</code> has been consumed. Note that this hook
will not be called if the <code>event</code> has been previously discarded.</p> <h4 id="parameters-8"><a href="#parameters-8" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>false</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.changed?</code></td> <td style="text-align:left;"><em>boolean</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.event</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartevent.html"><em>ChartEvent</em></a></td> <td style="text-align:left;">The event object.</td></tr> <tr><td style="text-align:left;"><code>args.replay</code></td> <td style="text-align:left;"><em>boolean</em></td> <td style="text-align:left;">True if this event is replayed from <code>Chart.update</code></td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L1008" target="_blank" rel="noopener noreferrer">index.esm.d.ts:1008<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterinit"><a href="#afterinit" class="header-anchor">#</a> afterInit</h3> <p>▸ <code>Optional</code><strong>afterInit</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after <code>chart</code> has been initialized and before the first update.</p> <h4 id="parameters-9"><a href="#parameters-9" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L785" target="_blank" rel="noopener noreferrer">index.esm.d.ts:785<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterlayout"><a href="#afterlayout" class="header-anchor">#</a> afterLayout</h3> <p>▸ <code>Optional</code><strong>afterLayout</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> has been laid out. Note that this hook will not
be called if the layout update has been previously cancelled.</p> <h4 id="parameters-10"><a href="#parameters-10" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L913" target="_blank" rel="noopener noreferrer">index.esm.d.ts:913<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterrender"><a href="#afterrender" class="header-anchor">#</a> afterRender</h3> <p>▸ <code>Optional</code><strong>afterRender</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the <code>chart</code> has been fully rendered (and animation completed). Note
that this hook will not be called if the rendering has been previously cancelled.</p> <h4 id="parameters-11"><a href="#parameters-11" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L930" target="_blank" rel="noopener noreferrer">index.esm.d.ts:930<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="aftertooltipdraw"><a href="#aftertooltipdraw" class="header-anchor">#</a> afterTooltipDraw</h3> <p>▸ <code>Optional</code><strong>afterTooltipDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>tooltip</code>: <a href="/docs/3.2.0/api/interfaces/tooltipmodel.html"><em>TooltipModel</em></a><TType> }, <code>options</code>: <em>Record</em><string, unknown>): <em>void</em></p> <p><strong><code>desc</code></strong> Called after drawing the <code>tooltip</code>. Note that this hook will not
be called if the tooltip drawing has been previously cancelled.</p> <h4 id="parameters-12"><a href="#parameters-12" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.tooltip</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/tooltipmodel.html"><em>TooltipModel</em></a><TType></td> <td style="text-align:left;">The tooltip.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;"><em>Record</em><string, unknown></td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Inherited from: <a href="/docs/3.2.0/api/interfaces/extendedplugin.html">ExtendedPlugin</a></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L2388" target="_blank" rel="noopener noreferrer">index.esm.d.ts:2388<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="afterupdate"><a href="#afterupdate" class="header-anchor">#</a> afterUpdate</h3> <p>▸ <code>Optional</code><strong>afterUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after <code>chart</code> has been updated and before rendering. Note that this
hook will not be called if the chart update has been previously cancelled.</p> <h4 id="parameters-13"><a href="#parameters-13" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L804" target="_blank" rel="noopener noreferrer">index.esm.d.ts:804<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforebuildticks"><a href="#beforebuildticks" class="header-anchor">#</a> beforeBuildTicks</h3> <p>▸ <code>Optional</code><strong>beforeBuildTicks</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>scale</code>: <a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called before scale bulds its ticks. This hook is called separately for each scale in the chart.</p> <h4 id="parameters-14"><a href="#parameters-14" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.scale</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>></td> <td style="text-align:left;">The scale.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L897" target="_blank" rel="noopener noreferrer">index.esm.d.ts:897<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedatalimits"><a href="#beforedatalimits" class="header-anchor">#</a> beforeDataLimits</h3> <p>▸ <code>Optional</code><strong>beforeDataLimits</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>scale</code>: <a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>> }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called before scale data limits are calculated. This hook is called separately for each scale in the chart.</p> <h4 id="parameters-15"><a href="#parameters-15" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.scale</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/scale.html"><em>Scale</em></a><<a href="/docs/3.2.0/api/interfaces/corescaleoptions.html"><em>CoreScaleOptions</em></a>></td> <td style="text-align:left;">The scale.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L881" target="_blank" rel="noopener noreferrer">index.esm.d.ts:881<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedatasetdraw"><a href="#beforedatasetdraw" class="header-anchor">#</a> beforeDatasetDraw</h3> <p>▸ <code>Optional</code><strong>beforeDatasetDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>index</code>: <em>number</em> ; <code>meta</code>: <a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before drawing the <code>chart</code> dataset at the given <code>args.index</code> (datasets
are drawn in the reverse order). If any plugin returns <code>false</code>, the datasets drawing
is cancelled until another <code>render</code> is triggered.</p> <h4 id="parameters-16"><a href="#parameters-16" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.index</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">The dataset index.</td></tr> <tr><td style="text-align:left;"><code>args.meta</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>></td> <td style="text-align:left;">The dataset metadata.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart datasets drawing.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L976" target="_blank" rel="noopener noreferrer">index.esm.d.ts:976<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedatasetupdate"><a href="#beforedatasetupdate" class="header-anchor">#</a> beforeDatasetUpdate</h3> <p>▸ <code>Optional</code><strong>beforeDatasetUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> ; <code>index</code>: <em>number</em> ; <code>meta</code>: <a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>> ; <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before updating the <code>chart</code> dataset at the given <code>args.index</code>. If any plugin
returns <code>false</code>, the datasets update is cancelled until another <code>update</code> is triggered.</p> <h4 id="parameters-17"><a href="#parameters-17" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.index</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">The dataset index.</td></tr> <tr><td style="text-align:left;"><code>args.meta</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartmeta.html"><em>ChartMeta</em></a><<a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>, <a href="/docs/3.2.0/api/#element"><em>Element</em></a><{}, {}>></td> <td style="text-align:left;">The dataset metadata.</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart datasets drawing.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L853" target="_blank" rel="noopener noreferrer">index.esm.d.ts:853<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedatasetsdraw"><a href="#beforedatasetsdraw" class="header-anchor">#</a> beforeDatasetsDraw</h3> <p>▸ <code>Optional</code><strong>beforeDatasetsDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before drawing the <code>chart</code> datasets. If any plugin returns <code>false</code>,
the datasets drawing is cancelled until another <code>render</code> is triggered.</p> <h4 id="parameters-18"><a href="#parameters-18" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart datasets drawing.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L956" target="_blank" rel="noopener noreferrer">index.esm.d.ts:956<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedatasetsupdate"><a href="#beforedatasetsupdate" class="header-anchor">#</a> beforeDatasetsUpdate</h3> <p>▸ <code>Optional</code><strong>beforeDatasetsUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before updating the <code>chart</code> datasets. If any plugin returns <code>false</code>,
the datasets update is cancelled until another <code>update</code> is triggered.</p> <p><strong><code>since</code></strong> version 2.1.5</p> <h4 id="parameters-19"><a href="#parameters-19" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p>false to cancel the datasets update.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L831" target="_blank" rel="noopener noreferrer">index.esm.d.ts:831<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforedraw"><a href="#beforedraw" class="header-anchor">#</a> beforeDraw</h3> <p>▸ <code>Optional</code><strong>beforeDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before drawing <code>chart</code> at every animation frame. If any plugin returns <code>false</code>,
the frame drawing is cancelled untilanother <code>render</code> is triggered.</p> <h4 id="parameters-20"><a href="#parameters-20" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart drawing.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L939" target="_blank" rel="noopener noreferrer">index.esm.d.ts:939<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforeelementsupdate"><a href="#beforeelementsupdate" class="header-anchor">#</a> beforeElementsUpdate</h3> <p>▸ <code>Optional</code><strong>beforeElementsUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called during the update process, before any chart elements have been created.
This can be used for data decimation by changing the data array inside a dataset.</p> <h4 id="parameters-21"><a href="#parameters-21" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L812" target="_blank" rel="noopener noreferrer">index.esm.d.ts:812<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforeevent"><a href="#beforeevent" class="header-anchor">#</a> beforeEvent</h3> <p>▸ <code>Optional</code><strong>beforeEvent</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> ; <code>event</code>: <a href="/docs/3.2.0/api/interfaces/chartevent.html"><em>ChartEvent</em></a> ; <code>replay</code>: <em>boolean</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before processing the specified <code>event</code>. If any plugin returns <code>false</code>,
the event will be discarded.</p> <h4 id="parameters-22"><a href="#parameters-22" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.event</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/chartevent.html"><em>ChartEvent</em></a></td> <td style="text-align:left;">The event object.</td></tr> <tr><td style="text-align:left;"><code>args.replay</code></td> <td style="text-align:left;"><em>boolean</em></td> <td style="text-align:left;">True if this event is replayed from <code>Chart.update</code></td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L997" target="_blank" rel="noopener noreferrer">index.esm.d.ts:997<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforeinit"><a href="#beforeinit" class="header-anchor">#</a> beforeInit</h3> <p>▸ <code>Optional</code><strong>beforeInit</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called before initializing <code>chart</code>.</p> <h4 id="parameters-23"><a href="#parameters-23" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L778" target="_blank" rel="noopener noreferrer">index.esm.d.ts:778<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforelayout"><a href="#beforelayout" class="header-anchor">#</a> beforeLayout</h3> <p>▸ <code>Optional</code><strong>beforeLayout</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before laying out <code>chart</code>. If any plugin returns <code>false</code>,
the layout update is cancelled until another <code>update</code> is triggered.</p> <h4 id="parameters-24"><a href="#parameters-24" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart layout.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L873" target="_blank" rel="noopener noreferrer">index.esm.d.ts:873<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforerender"><a href="#beforerender" class="header-anchor">#</a> beforeRender</h3> <p>▸ <code>Optional</code><strong>beforeRender</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before rendering <code>chart</code>. If any plugin returns <code>false</code>,
the rendering is cancelled until another <code>render</code> is triggered.</p> <h4 id="parameters-25"><a href="#parameters-25" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart rendering.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L922" target="_blank" rel="noopener noreferrer">index.esm.d.ts:922<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforetooltipdraw"><a href="#beforetooltipdraw" class="header-anchor">#</a> beforeTooltipDraw</h3> <p>▸ <code>Optional</code><strong>beforeTooltipDraw</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>tooltip</code>: <a href="/docs/3.2.0/api/interfaces/tooltipmodel.html"><em>TooltipModel</em></a><TType> }, <code>options</code>: <em>Record</em><string, unknown>): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before drawing the <code>tooltip</code>. If any plugin returns <code>false</code>,
the tooltip drawing is cancelled until another <code>render</code> is triggered.</p> <h4 id="parameters-26"><a href="#parameters-26" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.tooltip</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/interfaces/tooltipmodel.html"><em>TooltipModel</em></a><TType></td> <td style="text-align:left;">The tooltip.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;"><em>Record</em><string, unknown></td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart tooltip drawing.</p> <p>Inherited from: <a href="/docs/3.2.0/api/interfaces/extendedplugin.html">ExtendedPlugin</a></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L2379" target="_blank" rel="noopener noreferrer">index.esm.d.ts:2379<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="beforeupdate"><a href="#beforeupdate" class="header-anchor">#</a> beforeUpdate</h3> <p>▸ <code>Optional</code><strong>beforeUpdate</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>cancelable</code>: <em>true</em> ; <code>mode</code>: <em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em> }, <code>options</code>: O): <em>boolean</em> | <em>void</em></p> <p><strong><code>desc</code></strong> Called before updating <code>chart</code>. If any plugin returns <code>false</code>, the update
is cancelled (and thus subsequent render(s)) until another <code>update</code> is triggered.</p> <h4 id="parameters-27"><a href="#parameters-27" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.cancelable</code></td> <td style="text-align:left;"><em>true</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.mode</code></td> <td style="text-align:left;"><em>resize</em> | <em>reset</em> | <em>none</em> | <em>hide</em> | <em>show</em> | <em>normal</em> | <em>active</em></td> <td style="text-align:left;">The update mode</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>boolean</em> | <em>void</em></p> <p><code>false</code> to cancel the chart update.</p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L795" target="_blank" rel="noopener noreferrer">index.esm.d.ts:795<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="destroy"><a href="#destroy" class="header-anchor">#</a> destroy</h3> <p>▸ <code>Optional</code><strong>destroy</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p>Called after the chart has been destroyed.</p> <h4 id="parameters-28"><a href="#parameters-28" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L1023" target="_blank" rel="noopener noreferrer">index.esm.d.ts:1023<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="install"><a href="#install" class="header-anchor">#</a> install</h3> <p>▸ <code>Optional</code><strong>install</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called when plugin is installed for this chart instance. This hook is also invoked for disabled plugins (options === false).</p> <p><strong><code>since</code></strong> 3.0.0</p> <h4 id="parameters-29"><a href="#parameters-29" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L755" target="_blank" rel="noopener noreferrer">index.esm.d.ts:755<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="reset"><a href="#reset" class="header-anchor">#</a> reset</h3> <p>▸ <code>Optional</code><strong>reset</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called during chart reset</p> <p><strong><code>since</code></strong> version 3.0.0</p> <h4 id="parameters-30"><a href="#parameters-30" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L820" target="_blank" rel="noopener noreferrer">index.esm.d.ts:820<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="resize"><a href="#resize" class="header-anchor">#</a> resize</h3> <p>▸ <code>Optional</code><strong>resize</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: { <code>size</code>: { <code>height</code>: <em>number</em> ; <code>width</code>: <em>number</em> } }, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called after the chart as been resized.</p> <h4 id="parameters-31"><a href="#parameters-31" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>args.size</code></td> <td style="text-align:left;"><em>object</em></td> <td style="text-align:left;">The new canvas display size (eq. canvas.style width & height).</td></tr> <tr><td style="text-align:left;"><code>args.size.height</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>args.size.width</code></td> <td style="text-align:left;"><em>number</em></td> <td style="text-align:left;">-</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L1016" target="_blank" rel="noopener noreferrer">index.esm.d.ts:1016<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="start"><a href="#start" class="header-anchor">#</a> start</h3> <p>▸ <code>Optional</code><strong>start</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called when a plugin is starting. This happens when chart is created or plugin is enabled.</p> <p><strong><code>since</code></strong> 3.0.0</p> <h4 id="parameters-32"><a href="#parameters-32" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L763" target="_blank" rel="noopener noreferrer">index.esm.d.ts:763<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="stop"><a href="#stop" class="header-anchor">#</a> stop</h3> <p>▸ <code>Optional</code><strong>stop</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p><strong><code>desc</code></strong> Called when a plugin stopping. This happens when chart is destroyed or plugin is disabled.</p> <p><strong><code>since</code></strong> 3.0.0</p> <h4 id="parameters-33"><a href="#parameters-33" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L771" target="_blank" rel="noopener noreferrer">index.esm.d.ts:771<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <hr> <h3 id="uninstall"><a href="#uninstall" class="header-anchor">#</a> uninstall</h3> <p>▸ <code>Optional</code><strong>uninstall</strong>(<code>chart</code>: <a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown>, <code>args</code>: <em>Record</em><string, never>, <code>options</code>: O): <em>void</em></p> <p>Called after chart is destroyed on all plugins that were installed for that chart. This hook is also invoked for disabled plugins (options === false).</p> <p><strong><code>since</code></strong> 3.0.0</p> <h4 id="parameters-34"><a href="#parameters-34" class="header-anchor">#</a> Parameters:</h4> <table><thead><tr><th style="text-align:left;">Name</th> <th style="text-align:left;">Type</th> <th style="text-align:left;">Description</th></tr></thead> <tbody><tr><td style="text-align:left;"><code>chart</code></td> <td style="text-align:left;"><a href="/docs/3.2.0/api/classes/chart.html"><em>Chart</em></a><<em>bar</em> | <em>line</em> | <em>scatter</em> | <em>bubble</em> | <em>pie</em> | <em>doughnut</em> | <em>polarArea</em> | <em>radar</em>, (number | <a href="/docs/3.2.0/api/interfaces/scatterdatapoint.html"><em>ScatterDataPoint</em></a> | <a href="/docs/3.2.0/api/interfaces/bubbledatapoint.html"><em>BubbleDataPoint</em></a>)[], unknown></td> <td style="text-align:left;">The chart instance.</td></tr> <tr><td style="text-align:left;"><code>args</code></td> <td style="text-align:left;"><em>Record</em><string, never></td> <td style="text-align:left;">The call arguments.</td></tr> <tr><td style="text-align:left;"><code>options</code></td> <td style="text-align:left;">O</td> <td style="text-align:left;">The plugin options.</td></tr></tbody></table> <p><strong>Returns:</strong> <em>void</em></p> <p>Defined in: <a href="https://github.com/chartjs/Chart.js/blob/0f1d07a/types/index.esm.d.ts#L1031" target="_blank" rel="noopener noreferrer">index.esm.d.ts:1031<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p></div> <footer class="page-edit"><!----> <!----></footer> <div class="page-nav"><p class="inner"><span class="prev">
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