比如
<ul>
<li>aaaaaaaaaaaaaaaaa</li>
<li>aaaaaaaaaaaaaaaaa</li>
<li>aaaaaaaaaaaaaaaaa</li>
<li>aaaaaaaaaaaaaaaaa</li>
<li>aaaaaaaaaaaaaaaaa</li>
</ul>
如果li的长度大于5 则显示
<ul>
<li>aaaaa...</li>
<li>aaaaa...</li>
<li>aaaaa...</li>
<li>aaaaa...</li>
<li>aaaaa...</li>
</ul>
这种需求一般不都是用text-overflow:ellipsis来实现吗