<!doctype html>
<html>
<head>
<style type="text/css">
//css控制内容过长显示省略号和悬停时显示全部内容
.li1 {
list-style:none;
width:200px;
white-space:nowrap;
text-overflow:ellipsis;
-o-text-overflow:ellipsis;
overflow: hidden;
margin-top:5px; }
.li2{
list-style:none;
margin-top:5px;
}
</style>
</head>
<body>
<ul>
<li class="li1" onmouseover="this.className='li2'" onmouseout="this.className='li1'"><a href="#">内容过长显示省略号 鼠标悬停显示1</a></li>
<li class="li1" onmouseover="this.className='li2'" onmouseout="this.className='li1'"><a href="#">内容过长显示省略号 鼠标悬停显示2</a></li>
<li class="li1" onmouseover="this.className='li2'" onmouseout="this.className='li1'"><a href="#">内容过长显示省略号 鼠标悬停显示3</a></li>
<li class="li1" onmouseover="this.className='li2'" onmouseout="this.className='li1'"><a href="#">内容过长显示省略号 鼠标悬停显示4</a></li>
<li class="li1" onmouseover="this.className='li2'" onmouseout="this.className='li1'"><a href="#">内容过长显示省略号 鼠标悬停显示5</a></li>
</ul>
</body>
</html>