58 lines
1.5 KiB
HTML
58 lines
1.5 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<style>
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.ancestors *
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{
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display: block;
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border: 2px solid lightgrey;
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color: lightgrey;
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padding: 5px;
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margin: 15px;
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}
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.descendants *
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{
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display: block;
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border: 2px solid lightgrey;
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color: lightgrey;
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padding: 5px;
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margin: 15px;
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}
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.descendants1 *
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{
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display: block;
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border: 2px solid grey;
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color: grey;
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padding: 5px;
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margin: 15px;
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}
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.demo2{
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color: red;
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}
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</style>
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<script src="https://cdn.staticfile.org/jquery/2.0.0/jquery.min.js"></script>
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</head>
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<body>
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<div class="descendants" style="width:500px;">div (当前元素)
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<p class="11">p (子)
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<span>span (孙)</span>
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</p>
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<p class="11">p (子)
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<span>span (孙)</span>
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</p>
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<p class="22">p (子)
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<span>span (孙)</span>
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</p>
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</div>
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<script>
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// $(".descendants").children(":first").css({"color":"red","border":"2px solid red"});
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// $(".descendants").children(".11").css({"color":"red","border":"2px solid red"});
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$(".descendants").child().css({"color":"red","border":"2px solid red"});
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</script>
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</body>
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</html>
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