自定义属性的添加

<ul id="uu">

<li>aa</li>

<li>ss</li>

<li>zz</li>

<li>xx</li>

</ul>

<script>

var list=document.getElementById("uu").getElementByTagname("li");

for(var i=0;i<list.length;i++){

list[i].setAttribute("score",(i+1)*10);

list[i].onclick=function(){

alert(this.getAttribute("score"));

};

}

</script>