在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title> 
</head>
<body>

<form action="form-action.php.html">
<select name="cars" multiple>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="opel">Opel</option>
  <option value="audi">Audi</option>
</select>
<input type="submit">
</form>

<p>按住 Ctrl (windows) / Command (Mac) 按钮来选择多个选项。</p>

</body>
</html>

源代码

动行结果