参考下面代码
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!--效果html开始--
div id="lottery"
table border="0" cellpadding="0" cellspacing="0"
tr
td class="lottery-unit lottery-unit-0"img src="images/1.png"/td
td class="lottery-unit lottery-unit-1"img src="images/2.png"/td
td class="lottery-unit lottery-unit-2"img src="images/4.png"/td
td class="lottery-unit lottery-unit-3"img src="images/3.png"/td
/tr
tr
td class="lottery-unit lottery-unit-11"img src="images/7.png"/td
td colspan="2" rowspan="2"a href="#"/a/td
td class="lottery-unit lottery-unit-4"img src="images/5.png"/td
/tr
tr
td class="lottery-unit lottery-unit-10"img src="images/1.png"/td
td class="lottery-unit lottery-unit-5"img src="images/6.png"/td
/tr
tr
td class="lottery-unit lottery-unit-9"img src="images/3.png"/td
td class="lottery-unit lottery-unit-8"img src="images/6.png"/td
td class="lottery-unit lottery-unit-7"img src="images/8.png"/td
td class="lottery-unit lottery-unit-6"img src="images/7.png"/td
/tr
/table
/div
js部分
script type="text/javascript" src="jquery-1.8.3.min.js"/script
script type="text/javascript"
var lottery={
index:-1, //当前转动到哪个位置，起点位置
count:0, //总共有多少个位置
timer:0, //setTimeout的ID，用clearTimeout清除
speed:20, //初始转动速度
times:0, //转动次数
cycle:50, //转动基本次数：即至少需要转动多少次再进入抽奖环节
prize:-1, //中奖位置
init:function(id){
if ($("#"+id).find(".lottery-unit").length0) {
$lottery = $("#"+id);
$units = $lottery.find(".lottery-unit");
this.obj = $lottery;
this.count = $units.length;
$lottery.find(".lottery-unit-"+this.index).addClass("active");
};
},
roll:function(){
var index = this.index;
var count = this.count;
var lottery = this.obj;
$(lottery).find(".lottery-unit-"+index).removeClass("active");
index += 1;
if (indexcount-1) {
index = 0;
};
$(lottery).find(".lottery-unit-"+index).addClass("active");
this.index=index;
return false;
},
stop:function(index){
this.prize=index;
return false;
}
};
function roll(){
lottery.times += 1;
lottery.roll();
if (lottery.times lottery.cycle+10 lottery.prize==lottery.index) {
clearTimeout(lottery.timer);
lottery.prize=-1;
lottery.times=0;
click=false;
}else{
if (lottery.timeslottery.cycle) {
lottery.speed -= 10;
}else if(lottery.times==lottery.cycle) {
var index = Math.random()*(lottery.count)|0;
lottery.prize = index;
}else{
if (lottery.times lottery.cycle+10 ((lottery.prize==0 lottery.index==7) || lottery.prize==lottery.index+1)) {
lottery.speed += 110;
}else{
lottery.speed += 20;
}
}
if (lottery.speed40) {
lottery.speed=40;
};
//console.log(lottery.times+'^^^^^^'+lottery.speed+'^^^^^^^'+lottery.prize);
lottery.timer = setTimeout(roll,lottery.speed);
}
return false;
}
var click=false;
window.onload=function(){
lottery.init('lottery');
$("#lottery a").click(function(){
if (click) {
return false;
}else{
lottery.speed=100;
roll();
click=true;
return false;
}
});
};
/script
用线程控制，第一次点开始随机函数，再次点的时候停止线程运行，并输出最后一次运行随机函数的值
用户积分是后台传递给你的，
你设置一个变量存起来判断就OK
如 var n = obj
if（n 20）{}
