try_dom_select_size 在线代码实例

HTML
CSS
JavaScript
Result

运行保存全屏右侧展示

主题:


 <form>
<select id="mySelect">
  <option>Apple</option>
  <option>Banana</option>
  <option>Orange</option>
  <option>Melon</option>
</select>
<input type="button" onclick="changeSize()" value="Change size">
</form>