[英]html select list - display seleted value when size is 10
您应该将selected和focus属性添加到所需的选项标签
<select id="id_preview_style_select" name="preview_style" title="Preview Style" size="10" autofocus>
....
<option value="10" selected focus> 20 </option>
....
</select>
看看这个jsFiddle
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