<!DOCTYPE?html>
<html?lang="en">
<head>
????<meta?charset="UTF-8">
????<title>星級評分</title>
????<style>
?body,ul,li{
????????????padding:0;
?margin:0;
?}
????????li{list-style-type:none;}
????????.rating{
????????????width:300px;
?height:58px;
?margin:100px?auto;
?}
????????.rating-item{
????????????display:inline-block;
?width:58px;
?height:58px;
?margin-right:-8px;
?background:?url("01.PNG")no-repeat;
?cursor:pointer;
?}
????</style>
????<script?src="https://apps.bding.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<ul?id="rating"?class="rating">
????<li?class="rating-item"?title="十分不好"></li>
????<li?class="rating-item"?title="不好"></li>
????<li?class="rating-item"?title="一般"></li>
????<li?class="rating-item"?title="好"></li>
????<li?class="rating-item"?title="很好"></li>
</ul>
<script>
?var?num?=?2;
?var?$rating?=?$('#rating');
?var??$item?=?$rating.find('.rating-item');
?//點亮
?var?lightOn=function(num){
????????$item.each(function(index){//找到ul里的li，each每個li遍歷一遍
?if(index?<?num){
????????????????$(this).css('background-position','0?-68px');
?}
????????????else{
????????????????$(this).css('background-position','0?0');
?}
????????})
????}
????//初始化
?lightOn(num);
//事件綁定
?$item.on('mouseover',function(){
????????lightOn($(this).index()?+?1);
?}).on('click',function(){
???????num?=?$(this).index()?+?1;
?});
?$rating.on('mouseout',function(){
????????lightOn(num);
?})
</script>
</body>
</html>
2018-08-03
，你可以到控制臺上看一下報的錯誤，會提示? Uncaught ReferenceError: $ is not defined
試試這個地址<script src='https://cdn.bootcss.com/jquery/2.2.1/jquery.min.js'></script>