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movii/index.html

Last active June 23, 2017 15:32
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使用 CSS 伪类为 select 元素添加 placeholder: 2. onchange event with javascript
Raw
index.html
<select onchange="this.className=this.options[this.selectedIndex].className" class="placeholder">
<option value="" selected class="placeholder">placeholder</option>
<option value="1" class="green">green</option>
<option value="2" class="red">red</option>
</select>
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