jQuery Traversal - Ancestors
Traverse up the DOM
parent()
parents()
parentsUntil()
parent( ) Method
parent() method returns the direct parent element of the selected element.
This method will only traverse the DOM tree one level up.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.ancestors *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("span").parent().css({"color":"blue","border":"2px solid red"});
});
</script>
</head>
<body>
<div class="ancestors">
<div style="width:300px;">div (曾祖父元素)
<ul>ul (祖父元素)
<li>li (父元素)
<span>span</span>
</li>
</ul>
</div>
<div style="width:300px;">div (祖父元素)
<p>p (父元素)
<span>span</span>
</p>
</div>
</div>
</body>
</html>parents() method
parents() method returns all ancestor elements of the selected element, all the way up to the root element of the document (< html>).
<!DOCTYPE html>
<html>
<head>
<style>
.ancestors *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("span").parents("ul").css({"color":"red","border":"2px solid red"});
});
</script>
</head>
<body class="ancestors">body (great-great-grandparent)
<div style="width:300px;">div (great-grandparent)
<ul>ul (grandparent)
<li>li (direct parent)
<span>span</span>
</li>
</ul>
</div>
</body>
</html>Returns all ancestors of all <span> elements that are <ul> elements.
parentsUntil() method
parentsUntil() method returns all ancestor elements between two given elements.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.ancestors *
{
display: block;
border: 2px solid lightgrey;
color: lightgrey;
padding: 5px;
margin: 15px;
}
</style>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("span").parentsUntil("div").css({"color":"blue","border":"3px solid green"});
});
</script>
</head>
<body class="ancestors"> body (曾曾祖父元素)
<div style="width:300px;">div (曾祖父元素)
<ul>ul (祖父元素)
<li>li (父元素)
<span>span</span>
</li>
</ul>
</div>
</body>
</html>Returns all ancestor elements between the <span> and <div> elements.
new file
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>php中文网(php.cn)</title>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("li").parentsUntil(".inner",".second").css({"border":"3px solid blue", "width":"200px"});
})
</script>
</head>
<body>
<div class="outer">
<div>php中文网</div>
<div class="inner">
<ul class="first">
<li>HTML专区</li>
<li>Javascript专区</li>
<li>Div+CSS专区</li>
<li>Jquery专区</li>
</ul>
<ul class="second">
<li>HTML专区</li>
<li>Javascript专区</li>
<li>Div+CSS专区</li>
<li>Jquery专区</li>
</ul>
</div>
</div>
</body>
</html>
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