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132 lines
No EOL
5.4 KiB
HTML
132 lines
No EOL
5.4 KiB
HTML
<!DOCTYPE html>
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<html lang='en'><head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, minimum-scale=1, maximum-scale=1"><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>
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<div data-role="page">
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<div data-role="header">
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<h1>.removeClass()</h1>
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</div>
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<div data-role="content" data-theme="c" id="removeClass1">
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<h2 class="jq-clearfix roundTop section-title">
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<span class="name">.removeClass( [ className ] )</span> <span class="returns">Returns: <a class="return" href="http://docs.jquery.com/Types#jQuery">jQuery</a></span>
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</h2>
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<div class=" entry-details">
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<p class="desc"><strong>Description: </strong>Remove a single class, multiple classes, or all classes from each element in the set of matched elements.</p>
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<ul class="signatures">
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<li class="signature" id="removeClass-className">
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<h4 class="name">
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<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.removeClass( [ className ] )</h4>
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<p class="arguement"><strong>className</strong>A class name to be removed from the class attribute of each matched element.</p>
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</li>
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<li class="signature" id="removeClass-functionindex, class">
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<h4 class="name">
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<span class="versionAdded">version added: <a href="/category/version/1.4/">1.4</a></span>.removeClass( function(index, class) )</h4>
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<p class="arguement"><strong>function(index, class)</strong>A function returning one or more space-separated class names to be removed. Receives the index position of the element in the set and the old class value as arguments.</p>
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</li>
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</ul>
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<div class="longdesc">
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<p>If a class name is included as a parameter, then only that class will be removed from the set of matched elements. If no class names are specified in the parameter, all classes will be removed.</p>
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<p>More than one class may be removed at a time, separated by a space, from the set of matched elements, like so:</p>
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<pre>$('p').removeClass('myClass yourClass')
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</pre>
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<p>This method is often used with <code>.addClass()</code> to switch elements' classes from one to another, like so:</p>
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<pre>$('p').removeClass('myClass noClass').addClass('yourClass');
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</pre>
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<p>Here, the <code>myClass</code> and <code>noClass</code> classes are removed from all paragraphs, while <code>yourClass</code> is added.</p>
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<p>To replace all existing classes with another class, we can use <code>.attr('class', 'newClass')</code> instead.</p>
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<p>As of jQuery 1.4, the <code>.removeClass()</code> method allows us to indicate the class to be removed by passing in a function.</p>
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<pre>$('li:last').removeClass(function() {
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return $(this).prev().attr('class');
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});</pre>
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<p>This example removes the class name of the penultimate <code><li></code> from the last <code><li></code>.</p>
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</div>
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<h3>Examples:</h3>
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<div id="entry-examples" class="entry-examples">
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<div id="example-0">
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<h4>Example: <span class="desc">Remove the class 'blue' from the matched elements.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>
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p { margin: 4px; font-size:16px; font-weight:bolder; }
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.blue { color:blue; }
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.under { text-decoration:underline; }
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.highlight { background:yellow; }
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</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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<p class="blue under">Hello</p>
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<p class="blue under highlight">and</p>
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<p class="blue under">then</p>
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<p class="blue under">Goodbye</p>
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<script>$("p:even").removeClass("blue");</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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<div id="example-1">
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<h4>Example: <span class="desc">Remove the class 'blue' and 'under' from the matched elements.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>
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p { margin: 4px; font-size:16px; font-weight:bolder; }
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.blue { color:blue; }
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.under { text-decoration:underline; }
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.highlight { background:yellow; }
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</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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<p class="blue under">Hello</p>
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<p class="blue under highlight">and</p>
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<p class="blue under">then</p>
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<p class="blue under">Goodbye</p>
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<script>$("p:odd").removeClass("blue under");</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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<div id="example-2">
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<h4>Example: <span class="desc">Remove all the classes from the matched elements.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>
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p { margin: 4px; font-size:16px; font-weight:bolder; }
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.blue { color:blue; }
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.under { text-decoration:underline; }
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.highlight { background:yellow; }
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</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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<p class="blue under">Hello</p>
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<p class="blue under highlight">and</p>
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<p class="blue under">then</p>
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<p class="blue under">Goodbye</p>
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<script>$("p:eq(1)").removeClass();</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</body></html> |