Home >Web Front-end >JS Tutorial >How to find the parent class of a specified element in jquery
How to find the parent class of a specified element in jquery
- coldplay.xixiOriginal
- 2020-12-24 15:24:425264browse
Jquery method to find the parent class of a specified element: 1. Use the [closest()] method to return the first ancestor of the selected element; 2. Use the [parent()] method to return the selected element The element's immediate parent.
The operating environment of this tutorial: windows7 system, jquery3.2.1 version, DELL G3 computer.
Recommended: jquery video tutorial
##jquery method to find the parent class of a specified element:
In jquery, you can use the closest() method and parent() method to find the parent class of a specified element.closest()
method is used to return the first ancestor of the selected element.parent()
method is used to return the direct parent element of the selected element.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body style="text-align:center;">
<p style= "font-size: 17px; font-weight: bold;">点击按钮，查看结果</p>
<div class="parent">
<div class="child"></div>
</div>
<button>点击</button>
<p id="DOWN" style="color: green; font-size: 24px; font-weight: bold;"> </p>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script>
$('button').on('click', function() {
var object = $('.child').closest('.parent');
if (object.length) {
$('#DOWN').text("className = '.child'" + "，parentName = '.parent'");
}
else {
$('#DOWN').text("不存在父类");
}
});
</script>
</body>
</html>Rendering:
<!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="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("span").parent("li").css({"color":"red","border":"2px solid red"});
});
</script>
</head>
<body class="ancestors">body (曾曾祖父节点)
<div style="width:500px;">div (曾祖父节点)
<ul>ul (祖父节点)
<li>li (直接父节点)
<span>span</span>
</li>
<li>li (直接父节点)
<span>span</span>
</li>
</ul>
</div>
</body>
</html>Rendering:
Related free learning recommendations: javascript(Video)
The above is the detailed content of How to find the parent class of a specified element in jquery. For more information, please follow other related articles on the PHP Chinese website!