Html 如何在选择菜单中选择第一个空值选项？
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How to select first empty value option in a select menu?
提问by alex
The following always preselects the last option, even when I set the selectedattribute, but I like the first option to be preselected.
以下总是预选最后一个选项，即使我设置了selected属性，但我喜欢预选第一个选项。
<select name="filter">
<option value="" selected>Make a choice</option>
<option value="1">1</option>
<option value="3">3</option>
<option value="7">7</option>
<option value="">all</option>
</select>
Can this be done?
这能做到吗？
回答by bradenkeith
<select name="filter">
<option value="" selected="selected">Make a choice</option>
<option value="1">1</option>
<option value="3">3</option>
<option value="7">7</option>
<option value="">all</option>
</select>
If my code modification does not work. Check this article and make sure it's not something you're running in to http://www.beyondcoding.com/2008/12/16/option-selectedselected-not-working/
如果我的代码修改不起作用。检查这篇文章并确保它不是您遇到的http://www.beyondcoding.com/2008/12/16/option-selectedselected-not-working/
回答by ahebert
the correct implementation is:
正确的实现是：
<option value="1" selected>1</option>
<option value="9">9</option>
