抽红包

效果(网络问题上传不了gif动态图片)

CSS

.zh-chb-main{position: relative;margin: 0.3rem 0.3rem 0;}
.zh-chb-main .zh-center{position: absolute;z-index: 2;left: 50%; top: 1.2rem;width: 3.6rem;height: 2.4rem;margin-left: -1.8rem;font-size: 0.3rem;color: #fff;text-align: center;}
.zh-chb-main .zh-center p{padding: 0.7rem 0 0.3rem;}
.zh-chb-main .zh-center ul{display: inline-block;}
.zh-chb-main .zh-center ul li{float: left;width: 0.8rem;height: 0.8rem;margin-left: -1px;border: 1px solid #FCCE01;font-size: 0.5rem;color: #FCCE01;text-align: center;line-height: 0.8rem;}
.zh-chb-main .zh-awards-list{position: relative;width: 6.75rem;height: 5.4rem;margin: 0 auto;}
.zh-chb-main .zh-awards-list li{position: absolute;width: 1.35rem;height: 1.35rem;background-color: #F7C29F;box-shadow: 0 0 0 1px #fff;}
.zh-chb-main .zh-awards-list .active:before{content: "";display: block;position: absolute;z-index: 2;left: 0;top: 0;width: 100%;height: 100%;border: 2px solid #f00;box-sizing: border-box;}
.zh-chb-main .zh-awards-list .zh-hb{width: 1.15rem;height: 1.15rem;margin: 0.1rem 0 0 0.1rem;border-radius: 10px;background-color: #CE1012;}
.zh-chb-main .zh-awards-list li:nth-of-type(1){left: 0;top: 0;}
.zh-chb-main .zh-awards-list li:nth-of-type(2){left: 1.35rem;top: 0;}
.zh-chb-main .zh-awards-list li:nth-of-type(3){left: 2.7rem;top: 0;}
.zh-chb-main .zh-awards-list li:nth-of-type(4){left: 4.05rem;top: 0;}
.zh-chb-main .zh-awards-list li:nth-of-type(5){left: 5.4rem;top: 0;}
.zh-chb-main .zh-awards-list li:nth-of-type(6){left: 5.4rem;top: 1.35rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(7){left: 5.4rem;top: 2.7rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(8){left: 5.4rem;top: 4.05rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(9){left: 4.05rem;top: 4.05rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(10){left: 2.7rem;top: 4.05rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(11){left: 1.35rem;top: 4.05rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(12){left: 0rem;top: 4.05rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(13){left: 0rem;top: 2.7rem;}
.zh-chb-main .zh-awards-list li:nth-of-type(14){left: 0rem;top: 1.35rem;}
.zh-chb-main .zh-awards-list .zh-award-1a{background-image: url(../images/chb/img-chb-1a.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-1b{background-image: url(../images/chb/img-chb-1b.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-2a{background-image: url(../images/chb/img-chb-2a.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-2b{background-image: url(../images/chb/img-chb-2b.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-3a{background-image: url(../images/chb/img-chb-3a.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-3b{background-image: url(../images/chb/img-chb-3b.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-4a{background-image: url(../images/chb/img-chb-4a.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-4b{background-image: url(../images/chb/img-chb-4b.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list .zh-award-5{background-image: url(../images/chb/img-chb-5.png);background-size: 100% auto;background-repeat: no-repeat;background-position: center;}
.zh-chb-main .zh-awards-list2{height: 1.75rem;margin-top: 0.5rem;}
.zh-chb-main .zh-awards-list2 li {padding-bottom: 0.4rem;font-size: 0.3rem;color: #fff;text-align: center;}
.zh-chb-main .zh-awards-list2 li .zh-hb{margin-bottom: 0.05rem;color: #d5190d;}
.zh-chb-main .zh-awards-list2 li:nth-of-type(2){left: 1.8rem;}
.zh-chb-main .zh-awards-list2 li:nth-of-type(3){left: 3.6rem;}
.zh-chb-main .zh-awards-list2 li:nth-of-type(4){left: 5.4rem;}
.zh-chb-main .zh-go{display: block;width: 2rem;padding: 0.1rem 0;margin: 0.5rem auto;border-radius: 5px;background-color: #FCCE01;font-size: 0.5rem;color: #fff;text-align: center;}

HTML

<div class="zh-chb-main">
    <div class="zh-center">
        <p>获得奖金</p>
        <ul>
            <li>0</li>
            <li>0</li>
        </ul>
    </div>
    <ul class="zh-awards-list" id="zh_awards_list">
        <li data-award="1a"><div class="zh-hb zh-award-1a"></div></li>
        <li data-award="2a"><div class="zh-hb zh-award-2a"></div></li>
        <li data-award="3a"><div class="zh-hb zh-award-3a"></div></li>
        <li data-award="5"><div class="zh-hb zh-award-5"></div></li>
        <li data-award="3b"><div class="zh-hb zh-award-3b"></div></li>
        <li data-award="2a"><div class="zh-hb zh-award-2a"></div></li>
        <li data-award="2b"><div class="zh-hb zh-award-2b"></div></li>
        <li data-award="1a"><div class="zh-hb zh-award-1a"></div></li>
        <li data-award="4a"><div class="zh-hb zh-award-4a"></div></li>
        <li data-award="1b"><div class="zh-hb zh-award-1b"></div></li>
        <li data-award="3a"><div class="zh-hb zh-award-3a"></div></li>
        <li data-award="4a"><div class="zh-hb zh-award-4a"></div></li>
        <li data-award="4b"><div class="zh-hb zh-award-4b"></div></li>
        <li data-award="5"><div class="zh-hb zh-award-5"></div></li>
    </ul>
    <ul class="zh-awards-list zh-awards-list2">
        <li><div class="zh-hb zh-award-1a"></div>5元</li>
        <li><div class="zh-hb zh-award-2a"></div>10元</li>
        <li><div class="zh-hb zh-award-3a"></div>15元</li>
        <li><div class="zh-hb zh-award-4a"></div>20元</li>
    </ul>
    <a class="zh-go" href="###">GO</a>
</div>

<!-- 提示 -->
<div class="zh-dialog" id="zh_chb">
    <div class="zh-chb-tips">
        <img class="zh-close" src="images/icon-close2.png" alt="">
        <img class="zh-img-base" src="images/img-tips-redpacket.png" alt="">
        <div class="zh-text">
            恭喜你抽到现金红包
            <strong></strong>
        </div>
    </div>
</div>

JS

// 关闭对话框
$('.zh-dialog .zh-close').click(function() {
    $('.zh-dialog').removeClass('active');
});

// 抽奖
$('.zh-go').click(function() {
    if(!$(this).hasClass('active')) {
        $(this).addClass('active');
        cjFn(this);
    }
});

// 元函数
function yuanFn(type) {
    switch(type) {
        case '1a':
            return '05';
            break;
        case '1b':
            return '10';
            break;
        case '2a':
            return '10';
            break;
        case '2b':
            return '20';
            break;
        case '3a':
            return '15';
            break;
        case '3b':
            return '30';
            break;
        case '4a':
            return '20';
            break;
        case '4b':
            return '40';
            break;
        case '5':
            return '00';
            break;
    }
}

// 抽奖函数
var prevIndex = 0;
function cjFn(goEle) {
    $('#zh_awards_list li').removeClass('open');
    // 循环
    var liNum = $('#zh_awards_list li').size(), // 红包数量
        index = prevIndex, // 默认索引
        acount = liNum*Math.round(Math.random()*2+1)+Math.round(Math.random()*liNum), // 总次数
        allTimes = Math.floor(acount/liNum), // 总圈数
        restTimes = acount%liNum; // 剩余次数
    var cjFlag = setInterval(function() {
        index++;
        if(allTimes > 0) {
            if(index==liNum) {
                index = 0;
                allTimes--;
            }
        } else {
            if(restTimes==0 || index==restTimes) {
                var activeEle = $('#zh_awards_list li').eq(index-1),
                    money = yuanFn(activeEle.attr('data-award'));
                $('.zh-chb-main .zh-center ul li:first').text(money.substr(0,1));
                $('.zh-chb-main .zh-center ul li:last').text(money.substr(1,1));
                $('.zh-chb-tips .zh-text strong').text((+money)+'元');
                $('#zh_chb').addClass('active');
                activeEle.addClass('open');
                $(goEle).removeClass('active');
                clearInterval(cjFlag);
            }
        }
        $('#zh_awards_list li').eq(index-1).addClass('active').siblings().removeClass('active');
        prevIndex = index;
    }, 50);
}