<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>星级评价</title>
<style type="text/css">
.star{padding: 0; margin:0;}
.star em{ width: 27px; height: 27px; background: url(star.gif) no-repeat top left;float:left;}
.star em.color{ background: url(star.gif) no-repeat bottom left; }
.star span{padding-left: 5px; line-height: 30px;}
</style>
</head>
<body>
<div id="star" class="star">
<em mytitle="很差"></em>
<em mytitle="差"></em>
<em mytitle="中"></em>
<em mytitle="好"></em>
<em mytitle="很好"></em>
<span></span>
</div>
</body>
</html>
<script>
var oDiv=document.getElementById("star");
var aEm=oDiv.getElementsByTagName("em");
var result=oDiv.getElementsByTagName("span")[0];
for (var i = 0; i < aEm.length; i++) {
aEm[i].index=i;
aEm[i].onmouseover=function(){
for (var i = 0; i < aEm.length; i++) {
if(i<=this.index){
aEm[i].className="color"
}else{
aEm[i].className=""
}
}
result.innerHTML=this.getAttribute("mytitle");
}
};
</script>
