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HTML -Tutorial, OPTGroup -Elemente verstehen

Autor：Eve Cole Aktualisierungszeit：2025-04-10 04:32:01

Wählen Sie 的分类选择, 经测试 IE 和 ff 都能很好的支持该元素

<! DocType html public -// w3c // dtd xhtml 1.0 strict // en

http://www.w3.org/tr/xhtml1/dtd/xhtml1-strict.dtd>

<html xmlns = http: //www.w3.org/1999/xhtml>

<kopf>

<title> runcode </title>

<meta http-äquiv = content-type content = text/html; charset = utf-8 />

<meta name = Autor content = sheneyan />

</head>

<body>

<Selech>

<Optgroup Label = a>

<option> a1 </option>

<OPTION> A2 </option>

<OPTION> A3 </option>

</optgroup>

<Optgroup Label = b>

<OPTION> B1 </option>

<OPTION> B2 </Option>

<OPTION> B3 </option>

</optgroup>

</select>

</body>

</html>

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