Question

javascript中onmouseover和onmouseout

<tr onmouseover=this.style.backgroundColor='#efefef' onmouseout=this.style.backgroundColor=''>1.现在要改写样式 把这两个动作写到样式里面去,改怎么写?2.要是写成javascript 来控制改如何写?

Answer 1

tr:hover{background-color:#efefef;}
tr:active{background-color:inherit;}

tr.onmouseover = function(tr){
tr.style.backgroundColor='#efefef';
}
tr.onmouseout = function(tr){
tr.style.backgroundColor = '';
}