<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>星级评分--第一种实现方式</title>
<script src="jquery.min.js"></script>
<style>
body,ul,li{
padding:0;
margin:0;
}
li{
list-style-type:none;
}
.rating{
width:175px;
height:35px;
margin:100px auto;
}
.rating-item{
float:left;
width:35px;
height:35px;
background:url(image/01.jpg) no-repeat;
cursor:pointer;
}
</style>
<script>
var rating=(function() {
var lightOn = function ($item,num) {
$item.each(function (index) {
if (index < num) {
$(this).css('background-position', '0 -36px');
} else {
$(this).css('background-position', '0 0');
}
});
};
var init = function (el, num) {
var $rating = $(el);
$item = $rating.find('rating-item');
lightOn($item, num);
$rating.on('mouseover', 'rating-item', function () {
lightOn($(this).index() + 1);
}).on('click', 'rating-item', function () {
num = $(this).index() + 1;
}).on('mouseout', function () {
lightOn(num);
});
};
$.fn.extend({
rating:function(num){
return this.each(function(){
init(this,num);
});
}
});
return {
init: init
};
})();
rating.init('#rating',2);
// rating.init('#rating2',3)
$('#rating2').rating(4);
</script>
</head>
<body>
<ul class="rating" id="rating">
<li class="rating-item" title="很不好"></li>
<li class="rating-item" title="不好"></li>
<li class="rating-item" title="一般"></li>
<li class="rating-item" title="好"></li>
<li class="rating-item" title="很好"></li>
</ul>
<ul class="rating" id="rating2">
<li class="rating-item" title="很不好"></li>
<li class="rating-item" title="不好"></li>
<li class="rating-item" title="一般"></li>
<li class="rating-item" title="好"></li>
<li class="rating-item" title="很好"></li>
</ul>
</body>
</html>$item = $rating.find('rating-item');
这个语句也要改成：$item = $rating.find('.rating-item');
事件委托绑定$rating.on('mouseover', 'rating-item',内，应该是 '.rating-item'。