基于jQuery转盘抽奖插件awardRotate.js

    awardRotate.js是一个基于jQuery的转盘抽奖插件，转盘转动采用了css3的transform属性的rotate旋转，并且对IE浏览器进行了大量的兼容，兼容到IE7。动画效果为：指针不转，而是圆盘转动，转动速度由快到慢。使用方便，在转盘转动结束后，随机显示抽奖内容。在转盘转动过程中，再点击是无效的，只有完全停止转动后，点击才会再次转动。
1、引入相关css和js

<link rel="stylesheet" href="css/demo.css" type="text/css" />
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/awardRotate.js"></script>

2、html代码

<div class="turntable-bg">
    <div class="pointer"><img src="images/pointer.png" alt="pointer" /></div>
    <div class="rotate"><img id="rotate" src="images/turntable2.png" alt="turntable" /></div>
</div>

3、js代码：

$(function (){
    var rotateTimeOut = function (){
        $('#rotate').rotate({
            angle:0,
            animateTo:2160,
            duration:8000,
            callback:function (){
                alert('网络超时，请检查您的网络设置！');
            }
        });
    };

    var bRotate = false;
    var rotateFn = function (awards, angles, txt){
        bRotate = !bRotate;
        $('#rotate').stopRotate();
        $('#rotate').rotate({
            angle:0,
            animateTo:angles+1800,
            duration:3000,
            callback:function (){
                alert(txt);
                bRotate = !bRotate;
            }
        })
    };

    $('.pointer').click(function (){
        if(bRotate)return;
        var item = rnd(0,7);
        switch (item) {
            case 0:
                //var angle = [26, 88, 137, 185, 235, 287, 337];
                rotateFn(0, 337, '未中奖');
                break;
            case 1:
                //var angle = [88, 137, 185, 235, 287];
                rotateFn(1, 26, '一等奖');
                break;
            case 2:
                //var angle = [137, 185, 235, 287];
                rotateFn(2, 88, '二等奖');
                break;
            case 3:
                //var angle = [137, 185, 235, 287];
                rotateFn(3, 137, '三等奖');
                break;
            case 4:
                //var angle = [185, 235, 287];
                rotateFn(4, 185, '四等奖');
                break;
            case 5:
                //var angle = [235, 287];
                rotateFn(5, 235, '五等奖');
                break;
            case 6:
                //var angle = [287];
                rotateFn(6, 287, '安慰奖');
                break;
        }
        console.log(item);
    });
});

//随机数
function rnd(n, m){
    return Math.floor(Math.random()*(m-n+1)+n)
}