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How to query the last child element with jquery

青灯夜游

May 13, 2022 pm 06:29 PM

jquery

Two methods: 1. Use children() and ":last-child" selector, syntax "$(parent element).children(":last-child")". 2. Use children() and eq(), the syntax is "$(parent element).children().eq(-1)".

How to query the last child element with jquery

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

Two methods for jquery to query the last child element

Method 1: Use children() and:last-childselector

Use children() to get all direct child elements under the specified parent node
Use:last-child to select the last element in the child element collection, that is, the last child element

Example:

<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<script src="js/jquery-1.10.2.min.js"></script>
		<script>
			$(function () {
            $("button").click(function () {
				$("ul").children(":last-child").css("color","red");
            })
        })
    </script>
	</head>
	<body>
		<ul>
			<li>香蕉</li>
			<li>苹果</li>
			<li>梨子</li>
			<li>橘子</li>
		</ul>
		<button>父元素ul的最后一个子元素</button>
	</body>
</html>

How to query the last child element with jquery

Method 2: Use children() and eq()

Use children() to get all direct child elements under the specified parent node
Use eq(-1) to select the last element in the sub-element set, that is, the last sub-element

Based on the above example, modify:

$(function() {
	$("button").click(function() {
		$("ul").children().eq(-1).css("color", "red");
	})
})

How to query the last child element with jquery

[Recommended learning: jQuery video tutorial, web front-end video]

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