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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">.removeData()</h1>
<div class="entry-meta jq-clearfix">
Categories:
<span class="category"><a href="http://api.jquery.com/category/data/" title="View all posts in Data">Data</a></span> | <span class="category"><a href="http://api.jquery.com/category/miscellaneous/" title="View all posts in Miscellaneous">Miscellaneous</a> > <a href="http://api.jquery.com/category/miscellaneous/data-storage/" title="View all posts in Data Storage">Data Storage</a></span>
</div>
</div>
<div id="removeData1" class="entry method">
<h2 class="jq-clearfix roundTop section-title">
<span class="name">.removeData( [name] )</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 previously-stored piece of data.</p>
<ul class="signatures">
<li class="signature" id="removeData-name">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.2.3/">1.2.3</a></span>.removeData( [name] )</h4>
<p class="arguement"><strong>name</strong>A string naming the piece of data to delete.</p>
</li>
<li class="signature" id="removeData-list">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.7/">1.7</a></span>.removeData( [list] )</h4>
<p class="arguement"><strong>list</strong>An array or space-separated string naming the pieces of data to delete.</p>
</li>
</ul>
<div class="longdesc">
<p>The <code>.removeData()</code> method allows us to remove values that were previously set using <code>.data()</code>. When called with the name of a key, <code>.removeData()</code> deletes that particular value; when called with no arguments, all values are removed. Removing data from jQuery's internal <code>.data()</code> cache does not effect any HTML5 <code>data-</code> attributes in a document; use <code>.removeAttr()</code> to remove those.</p>
<p><strong>As of jQuery 1.7</strong>, when called with an array of keys or a string of space-separated keys, <code>.removeData()</code> deletes the value of each key in that array or string.</p>
<p><strong>As of jQuery 1.4.3</strong>, calling <code>.removeData()</code> will cause the value of the property being removed to revert to the value of the data attribute of the same name in the DOM, rather than being set to <code>undefined</code>.</p>
</div>
<h3>Example:</h3>
<div class="entry-examples" id="entry-examples"><div id="example-0">
<h4><span class="desc">Set a data store for 2 names then remove one of them.</span></h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
div { margin:2px; color:blue; }
span { color:red; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<div>value1 before creation: <span></span></div>
<div>value1 after creation: <span></span></div>
<div>value1 after removal: <span></span></div>
<div>value2 after removal: <span></span></div>
<script>
$("span:eq(0)").text("" + $("div").data("test1"));
$("div").data("test1", "VALUE-1");
$("div").data("test2", "VALUE-2");
$("span:eq(1)").text("" + $("div").data("test1"));
$("div").removeData("test1");
$("span:eq(2)").text("" + $("div").data("test1"));
$("span:eq(3)").text("" + $("div").data("test2"));
</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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