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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>External HTML Tooltip | Chart.js</title>
<meta name="generator" content="VuePress 1.8.2">
<link rel="icon" href="/docs/3.5.0/favicon.ico">
<meta name="description" content="Open source HTML5 Charts for your website">
<link rel="preload" href="/docs/3.5.0/assets/css/0.styles.bc51b73f.css" as="style"><link rel="preload" href="/docs/3.5.0/assets/js/app.59cb20f3.js" as="script"><link rel="preload" href="/docs/3.5.0/assets/js/2.413130e4.js" as="script"><link rel="preload" href="/docs/3.5.0/assets/js/244.65aa69dd.js" as="script"><link rel="preload" href="/docs/3.5.0/assets/js/3.e2fd7cce.js" as="script"><link rel="prefetch" href="/docs/3.5.0/assets/js/10.a355b908.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/100.e5cb1cb4.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/101.1c2b3c1c.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/102.059fbc45.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/103.64e29596.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/104.c17d03e3.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/105.0254d1a7.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/106.1dd93b6c.js"><link rel="prefetch" href="/docs/3.5.0/assets/js/107.536f6a2c.js"><link rel="prefetch" 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config
</button><button class="code-editor-tab" data-v-66ca8197>
setup
</button><button class="code-editor-tab" data-v-66ca8197>
external
</button></div> <div class="code-editor-tools" data-v-66ca8197><!----> <a href="https://github.com/chartjs/Chart.js/blob/master/docs/samples/tooltip/html.md" title="View on GitHub" target="_blank" class="code-editor-tool fab fa-github fa-lg" data-v-66ca8197></a></div></div> <div class="code-editor-views" data-v-66ca8197><div class="editor-textarea ps" data-v-05f11386 data-v-66ca8197><div class="editor-textarea-content" data-v-05f11386><div class="prism-editor-wrapper" data-v-05f11386><div class="prism-editor__container"><textarea spellCheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">const config = {
type: 'line',
data: data,
options: {
interaction: {
mode: 'index',
intersect: false,
},
plugins: {
title: {
display: true,
text: 'Chart.js Line Chart - External Tooltips'
},
tooltip: {
enabled: false,
position: 'nearest',
external: externalTooltipHandler
}
}
}
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">const</span> config <span class="token operator">=</span> <span class="token punctuation">{</span>
type<span class="token operator">:</span> <span class="token string">'line'</span><span class="token punctuation">,</span>
data<span class="token operator">:</span> data<span class="token punctuation">,</span>
options<span class="token operator">:</span> <span class="token punctuation">{</span>
interaction<span class="token operator">:</span> <span class="token punctuation">{</span>
mode<span class="token operator">:</span> <span class="token string">'index'</span><span class="token punctuation">,</span>
intersect<span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
plugins<span class="token operator">:</span> <span class="token punctuation">{</span>
title<span class="token operator">:</span> <span class="token punctuation">{</span>
display<span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
text<span class="token operator">:</span> <span class="token string">'Chart.js Line Chart - External Tooltips'</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
tooltip<span class="token operator">:</span> <span class="token punctuation">{</span>
enabled<span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
position<span class="token operator">:</span> <span class="token string">'nearest'</span><span class="token punctuation">,</span>
external<span class="token operator">:</span> externalTooltipHandler
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span><br /></pre></div></div></div></div><div class="editor-textarea ps" style="display:none;" data-v-05f11386 data-v-66ca8197><div class="editor-textarea-content" data-v-05f11386><div class="prism-editor-wrapper" data-v-05f11386><div class="prism-editor__container"><textarea spellCheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100, decimals: 0};
const data = {
labels: Utils.months({count: DATA_COUNT}),
datasets: [
{
label: 'Dataset 1',
data: Utils.numbers(NUMBER_CFG),
fill: false,
borderColor: Utils.CHART_COLORS.red,
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
},
{
label: 'Dataset 2',
data: Utils.numbers(NUMBER_CFG),
fill: false,
borderColor: Utils.CHART_COLORS.blue,
backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
},
]
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">const</span> <span class="token constant">DATA_COUNT</span> <span class="token operator">=</span> <span class="token number">7</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> <span class="token constant">NUMBER_CFG</span> <span class="token operator">=</span> <span class="token punctuation">{</span>count<span class="token operator">:</span> <span class="token constant">DATA_COUNT</span><span class="token punctuation">,</span> min<span class="token operator">:</span> <span class="token operator">-</span><span class="token number">100</span><span class="token punctuation">,</span> max<span class="token operator">:</span> <span class="token number">100</span><span class="token punctuation">,</span> decimals<span class="token operator">:</span> <span class="token number">0</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> data <span class="token operator">=</span> <span class="token punctuation">{</span>
labels<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token function">months</span><span class="token punctuation">(</span><span class="token punctuation">{</span>count<span class="token operator">:</span> <span class="token constant">DATA_COUNT</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
datasets<span class="token operator">:</span> <span class="token punctuation">[</span>
<span class="token punctuation">{</span>
label<span class="token operator">:</span> <span class="token string">'Dataset 1'</span><span class="token punctuation">,</span>
data<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token function">numbers</span><span class="token punctuation">(</span><span class="token constant">NUMBER_CFG</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
fill<span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
borderColor<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token constant">CHART_COLORS</span><span class="token punctuation">.</span>red<span class="token punctuation">,</span>
backgroundColor<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token function">transparentize</span><span class="token punctuation">(</span>Utils<span class="token punctuation">.</span><span class="token constant">CHART_COLORS</span><span class="token punctuation">.</span>red<span class="token punctuation">,</span> <span class="token number">0.5</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token punctuation">{</span>
label<span class="token operator">:</span> <span class="token string">'Dataset 2'</span><span class="token punctuation">,</span>
data<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token function">numbers</span><span class="token punctuation">(</span><span class="token constant">NUMBER_CFG</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
fill<span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
borderColor<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token constant">CHART_COLORS</span><span class="token punctuation">.</span>blue<span class="token punctuation">,</span>
backgroundColor<span class="token operator">:</span> Utils<span class="token punctuation">.</span><span class="token function">transparentize</span><span class="token punctuation">(</span>Utils<span class="token punctuation">.</span><span class="token constant">CHART_COLORS</span><span class="token punctuation">.</span>blue<span class="token punctuation">,</span> <span class="token number">0.5</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token punctuation">]</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span><br /></pre></div></div></div></div><div class="editor-textarea ps" style="display:none;" data-v-05f11386 data-v-66ca8197><div class="editor-textarea-content" data-v-05f11386><div class="prism-editor-wrapper" data-v-05f11386><div class="prism-editor__container"><textarea spellCheck="false" autocapitalize="off" autocomplete="off" autocorrect="off" data-gramm="false" placeholder="" data-testid="textarea" class="prism-editor__textarea">const getOrCreateTooltip = (chart) => {
let tooltipEl = chart.canvas.parentNode.querySelector('div');
if (!tooltipEl) {
tooltipEl = document.createElement('div');
tooltipEl.style.background = 'rgba(0, 0, 0, 0.7)';
tooltipEl.style.borderRadius = '3px';
tooltipEl.style.color = 'white';
tooltipEl.style.opacity = 1;
tooltipEl.style.pointerEvents = 'none';
tooltipEl.style.position = 'absolute';
tooltipEl.style.transform = 'translate(-50%, 0)';
tooltipEl.style.transition = 'all .1s ease';
const table = document.createElement('table');
table.style.margin = '0px';
tooltipEl.appendChild(table);
chart.canvas.parentNode.appendChild(tooltipEl);
}
return tooltipEl;
};
const externalTooltipHandler = (context) => {
// Tooltip Element
const {chart, tooltip} = context;
const tooltipEl = getOrCreateTooltip(chart);
// Hide if no tooltip
if (tooltip.opacity === 0) {
tooltipEl.style.opacity = 0;
return;
}
// Set Text
if (tooltip.body) {
const titleLines = tooltip.title || [];
const bodyLines = tooltip.body.map(b => b.lines);
const tableHead = document.createElement('thead');
titleLines.forEach(title => {
const tr = document.createElement('tr');
tr.style.borderWidth = 0;
const th = document.createElement('th');
th.style.borderWidth = 0;
const text = document.createTextNode(title);
th.appendChild(text);
tr.appendChild(th);
tableHead.appendChild(tr);
});
const tableBody = document.createElement('tbody');
bodyLines.forEach((body, i) => {
const colors = tooltip.labelColors[i];
const span = document.createElement('span');
span.style.background = colors.backgroundColor;
span.style.borderColor = colors.borderColor;
span.style.borderWidth = '2px';
span.style.marginRight = '10px';
span.style.height = '10px';
span.style.width = '10px';
span.style.display = 'inline-block';
const tr = document.createElement('tr');
tr.style.backgroundColor = 'inherit';
tr.style.borderWidth = 0;
const td = document.createElement('td');
td.style.borderWidth = 0;
const text = document.createTextNode(body);
td.appendChild(span);
td.appendChild(text);
tr.appendChild(td);
tableBody.appendChild(tr);
});
const tableRoot = tooltipEl.querySelector('table');
// Remove old children
while (tableRoot.firstChild) {
tableRoot.firstChild.remove();
}
// Add new children
tableRoot.appendChild(tableHead);
tableRoot.appendChild(tableBody);
}
const {offsetLeft: positionX, offsetTop: positionY} = chart.canvas;
// Display, position, and set styles for font
tooltipEl.style.opacity = 1;
tooltipEl.style.left = positionX + tooltip.caretX + 'px';
tooltipEl.style.top = positionY + tooltip.caretY + 'px';
tooltipEl.style.font = tooltip.options.bodyFont.string;
tooltipEl.style.padding = tooltip.options.padding + 'px ' + tooltip.options.padding + 'px';
};</textarea><pre data-testid="preview" class="prism-editor__editor"><span class="token keyword">const</span> <span class="token function-variable function">getOrCreateTooltip</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token parameter">chart</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">let</span> tooltipEl <span class="token operator">=</span> chart<span class="token punctuation">.</span>canvas<span class="token punctuation">.</span>parentNode<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'div'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>tooltipEl<span class="token punctuation">)</span> <span class="token punctuation">{</span>
tooltipEl <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'div'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>background <span class="token operator">=</span> <span class="token string">'rgba(0, 0, 0, 0.7)'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderRadius <span class="token operator">=</span> <span class="token string">'3px'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>color <span class="token operator">=</span> <span class="token string">'white'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>opacity <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>pointerEvents <span class="token operator">=</span> <span class="token string">'none'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>position <span class="token operator">=</span> <span class="token string">'absolute'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>transform <span class="token operator">=</span> <span class="token string">'translate(-50%, 0)'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>transition <span class="token operator">=</span> <span class="token string">'all .1s ease'</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> table <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'table'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
table<span class="token punctuation">.</span>style<span class="token punctuation">.</span>margin <span class="token operator">=</span> <span class="token string">'0px'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>table<span class="token punctuation">)</span><span class="token punctuation">;</span>
chart<span class="token punctuation">.</span>canvas<span class="token punctuation">.</span>parentNode<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>tooltipEl<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">return</span> tooltipEl<span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> <span class="token function-variable function">externalTooltipHandler</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token parameter">context</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token comment">// Tooltip Element</span>
<span class="token keyword">const</span> <span class="token punctuation">{</span>chart<span class="token punctuation">,</span> tooltip<span class="token punctuation">}</span> <span class="token operator">=</span> context<span class="token punctuation">;</span>
<span class="token keyword">const</span> tooltipEl <span class="token operator">=</span> <span class="token function">getOrCreateTooltip</span><span class="token punctuation">(</span>chart<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// Hide if no tooltip</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>tooltip<span class="token punctuation">.</span>opacity <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>opacity <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
<span class="token keyword">return</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// Set Text</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>tooltip<span class="token punctuation">.</span>body<span class="token punctuation">)</span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> titleLines <span class="token operator">=</span> tooltip<span class="token punctuation">.</span>title <span class="token operator">||</span> <span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> bodyLines <span class="token operator">=</span> tooltip<span class="token punctuation">.</span>body<span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span><span class="token parameter">b</span> <span class="token operator">=></span> b<span class="token punctuation">.</span>lines<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> tableHead <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'thead'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
titleLines<span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token parameter">title</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> tr <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'tr'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
tr<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderWidth <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> th <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'th'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
th<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderWidth <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> text <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createTextNode</span><span class="token punctuation">(</span>title<span class="token punctuation">)</span><span class="token punctuation">;</span>
th<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>text<span class="token punctuation">)</span><span class="token punctuation">;</span>
tr<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>th<span class="token punctuation">)</span><span class="token punctuation">;</span>
tableHead<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>tr<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> tableBody <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'tbody'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
bodyLines<span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">body<span class="token punctuation">,</span> i</span><span class="token punctuation">)</span> <span class="token operator">=></span> <span class="token punctuation">{</span>
<span class="token keyword">const</span> colors <span class="token operator">=</span> tooltip<span class="token punctuation">.</span>labelColors<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> span <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'span'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>background <span class="token operator">=</span> colors<span class="token punctuation">.</span>backgroundColor<span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderColor <span class="token operator">=</span> colors<span class="token punctuation">.</span>borderColor<span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderWidth <span class="token operator">=</span> <span class="token string">'2px'</span><span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>marginRight <span class="token operator">=</span> <span class="token string">'10px'</span><span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>height <span class="token operator">=</span> <span class="token string">'10px'</span><span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>width <span class="token operator">=</span> <span class="token string">'10px'</span><span class="token punctuation">;</span>
span<span class="token punctuation">.</span>style<span class="token punctuation">.</span>display <span class="token operator">=</span> <span class="token string">'inline-block'</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> tr <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'tr'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
tr<span class="token punctuation">.</span>style<span class="token punctuation">.</span>backgroundColor <span class="token operator">=</span> <span class="token string">'inherit'</span><span class="token punctuation">;</span>
tr<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderWidth <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> td <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createElement</span><span class="token punctuation">(</span><span class="token string">'td'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
td<span class="token punctuation">.</span>style<span class="token punctuation">.</span>borderWidth <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> text <span class="token operator">=</span> document<span class="token punctuation">.</span><span class="token function">createTextNode</span><span class="token punctuation">(</span>body<span class="token punctuation">)</span><span class="token punctuation">;</span>
td<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>span<span class="token punctuation">)</span><span class="token punctuation">;</span>
td<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>text<span class="token punctuation">)</span><span class="token punctuation">;</span>
tr<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>td<span class="token punctuation">)</span><span class="token punctuation">;</span>
tableBody<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>tr<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> tableRoot <span class="token operator">=</span> tooltipEl<span class="token punctuation">.</span><span class="token function">querySelector</span><span class="token punctuation">(</span><span class="token string">'table'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">// Remove old children</span>
<span class="token keyword">while</span> <span class="token punctuation">(</span>tableRoot<span class="token punctuation">.</span>firstChild<span class="token punctuation">)</span> <span class="token punctuation">{</span>
tableRoot<span class="token punctuation">.</span>firstChild<span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token comment">// Add new children</span>
tableRoot<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>tableHead<span class="token punctuation">)</span><span class="token punctuation">;</span>
tableRoot<span class="token punctuation">.</span><span class="token function">appendChild</span><span class="token punctuation">(</span>tableBody<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token keyword">const</span> <span class="token punctuation">{</span>offsetLeft<span class="token operator">:</span> positionX<span class="token punctuation">,</span> offsetTop<span class="token operator">:</span> positionY<span class="token punctuation">}</span> <span class="token operator">=</span> chart<span class="token punctuation">.</span>canvas<span class="token punctuation">;</span>
<span class="token comment">// Display, position, and set styles for font</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>opacity <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>left <span class="token operator">=</span> positionX <span class="token operator">+</span> tooltip<span class="token punctuation">.</span>caretX <span class="token operator">+</span> <span class="token string">'px'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>top <span class="token operator">=</span> positionY <span class="token operator">+</span> tooltip<span class="token punctuation">.</span>caretY <span class="token operator">+</span> <span class="token string">'px'</span><span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>font <span class="token operator">=</span> tooltip<span class="token punctuation">.</span>options<span class="token punctuation">.</span>bodyFont<span class="token punctuation">.</span>string<span class="token punctuation">;</span>
tooltipEl<span class="token punctuation">.</span>style<span class="token punctuation">.</span>padding <span class="token operator">=</span> tooltip<span class="token punctuation">.</span>options<span class="token punctuation">.</span>padding <span class="token operator">+</span> <span class="token string">'px '</span> <span class="token operator">+</span> tooltip<span class="token punctuation">.</span>options<span class="token punctuation">.</span>padding <span class="token operator">+</span> <span class="token string">'px'</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span><br /></pre></div></div></div></div></div></div></div></div> <footer class="page-edit"><!----> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">7/25/2021, 11:56:33 AM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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