hover 时显示tip

 <span className="deleteicon" value="删除" />

.editicon:before{  display:none; }
.editicon:hover::before{ 
  content:attr(value);width:98px; display:block; color:#000;background:#fff; border:1px solid #201d1d50; padding:8px; margin:25px 0 0 10px;  
  position:absolute;
}
.editicon:hover{ z-index:10; position:relative; }