1、<span class="my-span" title="无数无数无数无数无数">机构</span>
.myspan{
width: 100px;
height: 25px;
overflow: hidden;
display: block;
text-overflow: ellipsis;
white-space: nowrap;
cursor: pointer;
}
htnl5中设置文本单行显示，超出部分打省略号，鼠标移到文本时alt出全部文本内容
原文：http://www.cnblogs.com/hyq0002013/p/6068869.html