js实现对比百分比

 <script>
for(var i=1;i<=3;i++){
for(var j=2;j<=4;j++){
var hid="w_"+4+j+"_"+i;
//alert(hid);
var oNe=document.getElementById(hid);
//alert(oNe.id);
var oS=oNe.getElementsByTagName("a");
var sum=Number(oS[0].innerHTML)+Number(oS[1].innerHTML);
oS[0].innerHTML=parseInt(oS[0].innerHTML/sum*100);
oS[1].innerHTML=100-Number(oS[0].innerHTML);
}
}
 </script>