Horizontal traversal in the DOM tree
There are many useful methods that allow us to traverse the DOM tree horizontally:
siblings()
next()
nextAll()
nextUntil()
prev()
prevAll()
prevUntil()
siblings() method
siblings() method returns all sibling elements of the selected element.
Optional parameters can be used to filter the search for sibling elements.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.siblings *
{
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(){
$("h2").siblings("p").css({"color":"red","border":"2px solid blue","width":"200px"});
});
</script>
</head>
<body class="siblings">
<div>div (父元素)
<p>p</p>
<span>span</span>
<h2>h2</h2>
<h3>h3</h3>
<p>p</p>
</div>
</body>
</html>Returns all <p> elements that are siblings of <h2>.
next() method
next() method returns the next sibling element of the selected element.
This method only returns one element.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.siblings *
{
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(){
$("h2").next().css({"color":"red","border":"5px solid blue","width":"200px"});
});
</script>
</head>
<body class="siblings">
<div>
<p>p</p>
<span>span</span>
<h2>h2</h2>
<h3>h3</h3>
<p>p</p>
</div>
</body>
</html>Returns the next sibling element of <h2>.
nextAll() method
nextAll() method returns all following sibling elements of the selected element.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.siblings *
{
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(){
$("h2").nextAll().css({"color":"red","border":"3px solid blue","width":"200px"});
});
</script>
</head>
<body class="siblings">
<div>
<p>p</p>
<span>span</span>
<h2>h2</h2>
<h3>h3</h3>
<p>p</p>
</div>
</body>
</html>Returns all following sibling elements of <h2>.
nextUntil() method
nextUntil() method returns all following sibling elements between the two given parameters.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.siblings *
{
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(){
$("h2").nextUntil("h6").css({"color":"red","border":"4px solid blue","width":"200px"});
});
</script>
</head>
<body class="siblings">
<div>
<p>p</p>
<span>span</span>
<h2>h2</h2>
<h3>h3</h3>
<h4>h4</h4>
<h5>h5</h5>
<h6>h6</h6>
<p>p</p>
</div>
</body>
</html> All sibling elements between the <h2> and <h6> elements.
jQuery prev(), prevAll() & prevUntil() methods
The prev(), prevAll() and prevUntil() methods work like The above methods are similar, but in the opposite direction: they return the previous sibling elements (traversing backward along the sibling elements in the DOM tree, rather than forward).
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