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HTML不常用元素:optgroup_html/css_WEB-ITnose

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Release: 2016-06-24 11:22:10
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在网页表单中,元素用于在

这个元素包含两个属性:disabled和label。

disabled:表示选项组无法被选择

label:表示选项组的名字

 1 <select> 2     <optgroup label="Group 1"> 3         <option>Option 1.1</option> 4     </optgroup> 5     <optgroup label="Group 2"> 6         <option>Option 2.1</option> 7         <option>Option 2.2</option> 8     </optgroup> 9     <optgroup label="Group 3" disabled>10         <option>Option 3.1</option>11         <option>Option 3.2</option>12         <option>Option 3.3</option>13     </optgroup>14 </select>
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