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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">.offsetParent()</h1>
<div class="entry-meta jq-clearfix">
Categories:
<span class="category"><a href="http://api.jquery.com/category/offset/" title="View all posts in Offset">Offset</a></span> | <span class="category"><a href="http://api.jquery.com/category/traversing/" title="View all posts in Traversing">Traversing</a> > <a href="http://api.jquery.com/category/traversing/tree-traversal/" title="View all posts in Tree Traversal">Tree Traversal</a></span>
</div>
</div>
<div id="offsetParent1" class="entry method">
<h2 class="jq-clearfix roundTop section-title">
<span class="name">.offsetParent()</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>Get the closest ancestor element that is positioned.</p>
<ul class="signatures"><li class="signature" id="offsetParent"><h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.2.6/">1.2.6</a></span>.offsetParent()</h4></li></ul>
<div class="longdesc">
<p>Given a jQuery object that represents a set of DOM elements, the <code>.offsetParent()</code> method allows us to search through the ancestors of these elements in the DOM tree and construct a new jQuery object wrapped around the closest positioned ancestor. An element is said to be positioned if it has a CSS position attribute of <code>relative</code>, <code>absolute</code>, or <code>fixed</code>. This information is useful for calculating offsets for performing animations and placing objects on the page.</p>
<p>Consider a page with a basic nested list on it, with a positioned element:</p>
<pre>
<ul class="level-1">
<li class="item-i">I</li>
<li class="item-ii" style="position: relative;">II
<ul class="level-2">
<li class="item-a">A</li>
<li class="item-b">B
<ul class="level-3">
<li class="item-1">1</li>
<li class="item-2">2</li>
<li class="item-3">3</li>
</ul>
</li>
<li class="item-c">C</li>
</ul>
</li>
<li class="item-iii">III</li>
</ul>
</pre>
<p>If we begin at item A, we can find its positioned ancestor:</p>
<pre>$('li.item-a').offsetParent().css('background-color', 'red');</pre>
<p>This will change the color of list item II, which is positioned.</p>
</div>
<h3>Example:</h3>
<div class="entry-examples" id="entry-examples"><div id="example-0">
<h4><span class="desc">Find the offsetParent of item "A."</span></h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<ul class="level-1">
<li class="item-i">I</li>
<li class="item-ii" style="position: relative;">II
<ul class="level-2">
<li class="item-a">A</li>
<li class="item-b">B
<ul class="level-3">
<li class="item-1">1</li>
<li class="item-2">2</li>
<li class="item-3">3</li>
</ul>
</li>
<li class="item-c">C</li>
</ul>
</li>
<li class="item-iii">III</li>
</ul>
<script>$('li.item-a').offsetParent().css('background-color', 'red');</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo" rel="250"></div>
</div></div>
</div>
</div>
</div>
</body></html>
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