forked from jquery/api.jquery.com
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathcss.xml
185 lines (180 loc) · 9.19 KB
/
css.xml
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
<?xml version="1.0"?>
<entries>
<desc>Get the value of a style property for the first element in the set of matched elements or set one or more CSS properties for every matched element.</desc>
<entry type="method" name="css" return="String">
<title>.css()</title>
<signature>
<added>1.0</added>
<argument name="propertyName" type="String">
<desc>A CSS property.</desc>
</argument>
</signature>
<desc>Get the value of a style property for the first element in the set of matched elements.</desc>
<longdesc>
<p>The <code>.css()</code> method is a convenient way to get a style property from the first matched element, especially in light of the different ways browsers access most of those properties (the <code>getComputedStyle()</code> method in standards-based browsers versus the <code>currentStyle</code> and <code>runtimeStyle</code> properties in Internet Explorer) and the different terms browsers use for certain properties. For example, Internet Explorer's DOM implementation refers to the <code>float</code> property as <code>styleFloat</code>, while W3C standards-compliant browsers refer to it as <code>cssFloat</code>. For consistency, you can simply use <code>"float"</code>, and jQuery will translate it to the correct value for each browser.</p>
<p>Also, jQuery can equally interpret the CSS and DOM formatting of multiple-word properties. For example, jQuery understands and returns the correct value for both <code>.css('background-color')</code> and <code>.css('backgroundColor')</code>. Different browsers may return CSS color values that are logically but not textually equal, e.g., #FFF, #ffffff, and rgb(255,255,255).</p>
<p>Shorthand CSS properties (e.g. margin, background, border) are not supported. For example, if you want to retrieve the rendered margin, use: <code>$(elem).css('marginTop')</code> and <code>$(elem).css('marginRight')</code>, and so on.</p>
</longdesc>
<example>
<desc>To access the background color of a clicked div.</desc>
<code><![CDATA[
$("div").click(function () {
var color = $(this).css("background-color");
$("#result").html("That div is <span style='color:" +
color + ";'>" + color + "</span>.");
});
]]></code>
<css><![CDATA[
div { width:60px; height:60px; margin:5px; float:left; }
]]></css>
<html><![CDATA[
<span id="result"> </span>
<div style="background-color:blue;"></div>
<div style="background-color:rgb(15,99,30);"></div>
<div style="background-color:#123456;"></div>
<div style="background-color:#f11;"></div>]]></html>
</example>
<category slug="css"/>
<category slug="manipulation/style-properties"/>
<category slug="version/1.0"/>
<category slug="version/1.4"/>
</entry>
<entry type="method" name="css" return="jQuery">
<signature>
<added>1.0</added>
<argument name="propertyName" type="String">
<desc>A CSS property name.</desc>
</argument>
<argument name="value" type="String, Number">
<desc>A value to set for the property.</desc>
</argument>
</signature>
<signature>
<added>1.4</added>
<argument name="propertyName" type="String">
<desc>A CSS property name.</desc>
</argument>
<argument name="function(index, value)" type="Function">
<desc>A function returning the value to set. <code>this</code> is the current element. Receives the index position of the element in the set and the old value as arguments.</desc>
</argument>
</signature>
<signature>
<added>1.0</added>
<argument name="properties" type="PlainObject">
<desc>A map of property-value pairs to set.</desc>
</argument>
</signature>
<desc>Set one or more CSS properties for the set of matched elements.</desc>
<longdesc>
<p>As with the <code>.prop()</code> method, the <code>.css()</code> method makes setting properties of elements quick and easy. This method can take either a property name and value as separate parameters, or a single map of key-value pairs (JavaScript object notation).</p>
<p>Also, jQuery can equally interpret the CSS and DOM formatting of multiple-word properties. For example, jQuery understands and returns the correct value for both <code>.css({'background-color': '#ffe', 'border-left': '5px solid #ccc'})</code> and <code>.css({backgroundColor: '#ffe', borderLeft: '5px solid #ccc'})</code>. Notice that with the DOM notation, quotation marks around the property names are optional, but with CSS notation they're required due to the hyphen in the name.</p>
<p>When using <code>.css()</code> as a setter, jQuery modifies the element's <code>style</code> property. For example, <code>$('#mydiv').css('color', 'green')</code> is equivalent to <code>document.getElementById('mydiv').style.color = 'green'</code>. Setting the value of a style property to an empty string — e.g. <code>$('#mydiv').css('color', '')</code> — removes that property from an element if it has already been directly applied, whether in the HTML style attribute, through jQuery's <code>.css()</code> method, or through direct DOM manipulation of the <code>style</code> property. It does not, however, remove a style that has been applied with a CSS rule in a stylesheet or <code><style></code> element. <strong>Warning:</strong> one notable exception is that, for IE 8 and below, removing a shorthand property such as <code>border</code> or <code>background></code> will remove that style entirely from the element, regardless of what is set in a stylesheet or <code><style></code> element.</p>
<p>As of jQuery 1.6, <code>.css()</code> accepts relative values similar to <code>.animate()</code>. Relative values are a string starting with <code>+=</code> or <code>-=</code> to increment or decrement the current value. For example, if an element's padding-left was 10px, <code>.css( "padding-left", "+=15" )</code> would result in a total padding-left of 25px.</p>
<p>As of jQuery 1.4, <code>.css()</code> allows us to pass a function as the property value:</p>
<pre><code>$('div.example').css('width', function(index) {
return index * 50;
});</code></pre>
<p>This example sets the widths of the matched elements to incrementally larger values.</p>
<p><strong>Note: </strong>If nothing is returned in the setter function (ie. <code>function(index, style){})</code>, or if <code>undefined</code> is returned, the current value is not changed. This is useful for selectively setting values only when certain criteria are met.</p>
</longdesc>
<example>
<desc>To change the color of any paragraph to red on mouseover event.</desc>
<code><![CDATA[
$("p").mouseover(function () {
$(this).css("color","red");
});
]]></code>
<css><![CDATA[
p { color:blue; width:200px; font-size:14px; }
]]></css>
<html><![CDATA[
<p>Just roll the mouse over me.</p>
<p>Or me to see a color change.</p>
]]></html>
</example>
<example>
<desc>Increase the width of #box by 200 pixels</desc>
<code><![CDATA[
$("#box").one( "click", function () {
$( this ).css( "width","+=200" );
});
]]></code>
<css><![CDATA[
#box { background: black; color: snow; width:100px; padding:10px; }
]]></css>
<html><![CDATA[
<div id="box">Click me to grow</div>
]]></html>
</example>
<example>
<desc>To highlight a clicked word in the paragraph.</desc>
<code><![CDATA[
var words = $("p:first").text().split(" ");
var text = words.join("</span> <span>");
$("p:first").html("<span>" + text + "</span>");
$("span").click(function () {
$(this).css("background-color","yellow");
});
]]></code>
<css><![CDATA[
p { color:blue; font-weight:bold; cursor:pointer; }
]]></css>
<html><![CDATA[
<p>
Once upon a time there was a man
who lived in a pizza parlor. This
man just loved pizza and ate it all
the time. He went on to be the
happiest man in the world. The end.
</p>]]></html>
</example>
<example>
<desc>To set the color of all paragraphs to red and background to blue:</desc>
<code><![CDATA[
$("p").hover(function () {
$(this).css({'background-color' : 'yellow', 'font-weight' : 'bolder'});
}, function () {
var cssObj = {
'background-color' : '#ddd',
'font-weight' : '',
'color' : 'rgb(0,40,244)'
};
$(this).css(cssObj);
});
]]></code>
<css><![CDATA[
p { color:green; }
]]></css>
<html><![CDATA[
<p>Move the mouse over a paragraph.</p>
<p>Like this one or the one above.</p>
]]></html>
</example>
<example>
<desc>Increase the size of a div when you click it:</desc>
<code><![CDATA[
$("div").click(function() {
$(this).css({
width: function(index, value) {
return parseFloat(value) * 1.2;
},
height: function(index, value) {
return parseFloat(value) * 1.2;
}
});
});
]]></code>
<css><![CDATA[
div { width: 20px; height: 15px; background-color: #f33; }
]]></css>
<html><![CDATA[
<div>click</div>
<div>click</div>
]]></html>
</example>
<category slug="css"/>
<category slug="manipulation/style-properties"/>
<category slug="version/1.0"/>
<category slug="version/1.4"/>
</entry>
</entries>