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How to get the first child node of the parent node in jquery
- 青灯夜游Original
- 2022-05-11 19:40:142891browse
Method: 1. Use children() to obtain all direct child nodes under the specified parent node, which will return a collection object; 2. Use the ":first-child" selector to obtain the first child node in the collection. Just one node, the syntax is "$(father node).children(":first-child")".
The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.
jquery gets the first child node of the parent node
In jquery, you can use the children() method and: first-child selection Container to get the first child node of the parent node.
Implementation idea:
The children() method obtains all direct child nodes under the specified parent node
:first- The child selector gets the first node in the collection of child nodes.
Implementation 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(":first-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的第一个子节点</button>
</body>
</html>
[Recommended learning: jQuery video tutorial, web front-end 】
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