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<!DOCTYPE html>
<html lang='en'><head><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>
<div class="entry-content">
<div class="entry-title roundTop">
<h1 class="jq-clearfix">.removeProp()</h1>
<div class="entry-meta jq-clearfix">
Categories:
<span class="category"><a href="http://api.jquery.com/category/attributes/" title="View all posts in Attributes">Attributes</a></span> | <span class="category"><a href="http://api.jquery.com/category/manipulation/" title="View all posts in Manipulation">Manipulation</a> > <a href="http://api.jquery.com/category/manipulation/general-attributes/" title="View all posts in General Attributes">General Attributes</a></span>
</div>
</div>
<div id="removeProp1" class="entry method">
<h2 class="jq-clearfix roundTop section-title">
<span class="name">.removeProp( propertyName )</span> <span class="returns">Returns: <a class="return" href="http://api.jquery.com/Types/#jQuery">jQuery</a></span>
</h2>
<div class="jq-box roundBottom entry-details">
<p class="desc"><strong>Description: </strong>Remove a property for the set of matched elements.</p>
<ul class="signatures"><li class="signature" id="removeProp-propertyName">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.6/">1.6</a></span>.removeProp( propertyName )</h4>
<p class="arguement"><strong>propertyName</strong>The name of the property to set.</p>
</li></ul>
<div class="longdesc">
<p>The <code>.removeProp()</code> method removes properties set by the <code><a href="http://api.jquery.com/prop">.prop()</a></code> method.</p>
<p>With some built-in properties of a DOM element or <code>window</code> object, browsers may generate an error if an attempt is made to remove the property. jQuery first assigns the value <code>undefined</code> to the property and ignores any error the browser generates. In general, it is only necessary to remove custom properties that have been set on an object, and not built-in (native) properties.</p>
<p><strong>Note:</strong> Do not use this method to remove native properties such as checked, disabled, or selected. This will remove the property completely and, once removed, cannot be added again to element. Use <code><a href="http://api.jquery.com/prop">.prop()</a></code> to set these properties to <code>false</code> instead.</p>
</div>
<h3 id="notes-0">Additional Notes:</h3>
<div class="longdesc"><ul><li>In Internet Explorer prior to version 9, using <code><a href="http://api.jquery.com/prop/">.prop()</a></code> to set a DOM element property to anything other than a simple primitive value (number, string, or boolean) can cause memory leaks if the property is not removed (using <a href="http://api.jquery.com/removeProp/"><code>.removeProp()</code></a>) before the DOM element is removed from the document. To safely set values on DOM objects without memory leaks, use <a href="http://api.jquery.com/data/"><code>.data()</code></a>.</li></ul></div>
<h3>Example:</h3>
<div class="entry-examples" id="entry-examples"><div id="example-0">
<h4><span class="desc">Set a numeric property on a paragraph and then remove it. </span></h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
img { padding:10px; }
div { color:red; font-size:24px; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<p></p>
<script>
var $para = $("p");
$para.prop("luggageCode", 1234);
$para.append("The secret luggage code is: ", String($para.prop("luggageCode")), ". ");
$para.removeProp("luggageCode");
$para.append("Now the secret luggage code is: ", String($para.prop("luggageCode")), ". ");
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div></div>
</div>
</div>
</div>
</body></html>
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