How to delete all elements under a node in jquery-Front-end Q&A-php.cn

How to delete all elements under a node in jquery

青灯夜游

Release： 2022-04-21 16:05:13

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Method to delete all elements under a node: 1. Use find() to obtain all subset elements under the node (including subsets of subsets), the syntax is "specify node object.find("*") "; 2. Use remove() to delete the obtained elements (including all text and sub-nodes), the syntax is "acquired element set.remove()".

How to delete all elements under a node in jquery

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

jquery method of deleting all elements under a node

Implementation idea:

Use find( ) method to obtain all subset elements (including subsets of subsets) under the node
Use the remove() method to delete all obtained subset elements

Implementation code:

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<style>
			.div,
			div * {
				display: block;
				border: 2px solid lightgrey;
				color: lightgrey;
				padding: 5px;
				margin: 15px;
			}
			ul *{
				color:red;
				border:2px solid red;
			}
		</style>

		<script>
			$(document).ready(function() {
				$("button").on("click", function() {
					$("ul").find("*").remove();
				});
			});
		</script>
	</head>

	<body class="ancestors">
		<div style="width:500px;">div (父节点)
			<ul>ul (指定元素)
				<li>li (子节点1)
					<span>span (孙节点1)</span>
				</li>
				<li>li (子节点2)
					<span>span (孙节点2)</span>
				</li>
				<li>li (子节点3)
					<span>span (孙节点3)</span>
				</li>
			</ul>
		</div>
		<button>删除ul节点下所有元素</button>
	</body>

</html>

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How to delete all elements under a node in jquery

Description:

find() method returns the selected element The descendant element of (descendants are children, grandchildren, great-grandchildren, and so on.).

The find() method traverses all paths down the DOM element's descendants to the last descendant ().
#The remove() method removes the selected elements, including all text and child nodes. This method also removes data and events from the selected element.

【Recommended learning: jQuery video tutorial, web front-end video】

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