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HTML <optgroup> disabled 属性

❮ HTML <optgroup> 标签

示例

一个禁用的选项组

<label for="cars">选择一辆汽车:</label>
<select  name="cars" id="cars">
  <optgroup label="德国汽车" disabled>
    <option value="mercedes">奔驰</option>
    <option value="audi">奥迪</option>
  </optgroup>
</select>
自己尝试 »

定义和用法

The disabled 属性是一个布尔属性。

存在时,它指定选项组应被禁用。

禁用的选项组是不可用的,不可点击的。

The disabled 属性可以设置为阻止用户选择选项组,直到满足某些其他条件(如选中复选框等)。然后,需要使用 JavaScript 来删除 disabled 值,并使选项组可选。


浏览器支持

表中的数字指定第一个完全支持该属性的浏览器版本。

属性
disabled 8.0

语法

<optgroup disabled>

❮ HTML <optgroup> 标签
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