<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>星星评分</title>
<script>
window.onload=function(){ //加载窗口时就调用该方法
var imgs=document.getElementsByTagName("img");
for(var i=0;i<imgs.length;i++){
imgs[i].setAttribute("score",i+1);//设置分数
imgs[i].onclick=function(){ //点击时调用方法
var srcEl=event.srcElement;//通过event来获取原元素
var score=srcEl.getAttribute("score");//获取分数
for(var j=0;j<score;j++){
imgs[j].src="img/star1.jpg";
}
for(var j=score;j<imgs.length;j++){
imgs[j].src="img/star2.jpg";
}
document.getElementById("lab").innerHTML=srcEl.getAttribute("score");//通过srcEl调用getAttribute方法获取分数
}
}
}
</script>
</head>
<body>
<img src="img/star2.jpg">
<img src="img/star2.jpg">
<img src="img/star2.jpg">
<img src="img/star2.jpg">
<img src="img/star2.jpg">
<label id="lab">0</label>分
</body>
</html>
