星级评分--封装成jquery插件

<!DOCTYPE html>

<html>
<head>
    <meta charset="utf-8">
    <title>星级评分--封装成jquery插件</title>
</head>
<style type="text/css">
    body,ul,li{
        margin: 0;
        padding: 0;
    }
    li{
        list-style-type: none;
    }
    .rating{
        width: 162px;
        height: 32px;
        margin: 100px auto;
    }
    .rating-item{
        float: left;
        width: 32px;
        height: 32px;
        background: url('./img/rating.png') no-repeat;
        cursor: pointer;
    }
</style>
<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>
</body>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
<script type="text/javascript">
    //封装成jquery插件
    var rating = (function(){
        //点亮星星
        var lightOn = function($item,num){
            $item.each(function(index){
                if(index < num){
                    $(this).css('background-position','0 -32px');
                }else{
                    $(this).css('background-position','0 0');
                }
            });
        };
 
        //初始化
        var init = function(el,num){
            var $rating = $('#rating'),
                $item = $rating.find('.rating-item');
 
            //初始化,点亮num个星星
            lightOn($item,num);    
 
            $rating.on('mouseover','.rating-item',function(){//鼠标移入时,触发相应操作
                lightOn($item,$(this).index() + 1);
            }).on('click','.rating-item',function(){//鼠标点击时,触发相应操作
                num = $(this).index() + 1;
            }).on('mouseout',function(){//鼠标移出是,触发相应的操作
                lightOn($item,num);
            });
        };
 
        //jquery插件
        $.fn.extend({
            rating : function(num){
                return this.each(function(){
                    init(this,num);
                });
            }
        });
 
        return {
            init : init
        };
    })();
    $(".rating").rating(3);
</script>
素材：
posted @ 2018-04-11 15:33  心无引擎,眼无流派  阅读(204)  评论(0)    收藏  举报