JS实现随机抽选获奖者

本文实例为大家分享了JS实现随机抽选获奖者的具体代码,供大家参考,具体内容如下

<!--2018年9月12日——————幸运抽奖-->

<!DOCTYPE html>

<html>

<head>

<title></title>

<style type="text/css">

.select{

background: #3399FF;

color:white;

}

.button{

border-radius: 10px;

height: 100px;

font-size: 25px;

width: 100px;

background-color: #3399FF;

color: white;

}

.title{

font-family: cursive;

}

</style>

</head>

<body>

<div style="text-align:-webkit-center;font-size: 57px;color: #3399FF;" class="title">抽奖人员名单</div>

<table style="border:1px solid #ccc; width:800px; height:400px; text-align: center; margin: auto;" background="C:\Users\Administrator\Desktop\%application%\360壁纸\50736.jpg" >

<tr>

<td id="student_1">谢林峰</td>

<td id="student_2">卿明珠</td>

<td id="student_3">袁龙</td>

<td id="student_4">周志明</td>

<td id="student_5">秦玉萍</td>

<td id="student_6">金晖</td>

<td id="student_7">陶灵峰</td>

<td id="student_8">廖杨明</td>

</tr>

<tr>

<td id="student_9">胡雄</td>

<td id="student_10">胡俊凡</td>

<td id="student_11">李欣</td>

<td id="student_12">易君</td>

<td id="student_13">湛威</td>

<td id="student_14">古海平</td>

<td id="student_15">潘杰杰</td>

<td id="student_16">伍光政</td>

</tr>

<tr>

<td id="student_17">谭谈</td>

<td id="student_18">周强</td>

<td id="student_19">陈辉</td>

<td id="student_20">李庚云</td>

<td id="student_21">吴玉风</td>

<td id="student_22">伍鹏</td>

<td id="student_23">蔡东龙</td>

<td id="student_24">胡俊飞</td>

</tr>

<tr>

<td id="student_25">文捷频</td>

<td id="student_26">唐明</td>

<td id="student_27">吴鑫培</td>

<td id="student_28">唐翌</td>

<td id="student_29">邹家欢</td>

<td id="student_30">刘朋</td>

<td id="student_31">周文才</td>

<td id="student_32">阳小松</td>

</tr>

<tr>

<td id="student_33">张明博</td>

<td id="student_34">严伟</td>

<td id="student_"></td>

<td id="student_"></td>

<td id="student_"></td>

<td id="student_"></td>

<td id="student_"></td>

<td id="student_"></td>

</tr>

</table>

<sapn style="margin-left: 430px;">抽奖倒计时:</sapn><span id="Ten" style="color:red;font-size: 70px;">10</span>

<span style="color:red">s</span>

<span style="margin-left: 220px;">幸运星:</span>

<span style="font-size: 70px; color: red;" id="Lucky" class="title"></span>

<div style="text-align: -webkit-center;"><button onclick="go()" class="button">走你</button></div>

</body>

<script type="text/javascript">

//鼠标单击事件

var stuInterval;

var flag = false;

//点击开始事件

function go(){

if(flag != false){

return;

}

flag = true;

setTimeout(function(){

flag = false;

},15000);

time();//调用时间倒计时方法

//循环选取学生

stuInterval=setInterval(function(){

var ran=Math.floor(Math.random()*34+1);

var id="student_"+ran;

//获取到文本值并且赋属性

var td=document.getElementById(id);

//删除之前的样式

var stuO = document.getElementsByClassName("select");

if(stuO.length != 0){

stuO[0].setAttribute("class","");

}if(stuO){

td.setAttribute("class","select");

var stuname = td.innerText;

document.getElementById("Lucky").innerText = stuname;

}

},200)

}

//时间倒计时

function time(){

var t=10;

var int=setInterval(function(){

--t;

var tspan=document.getElementById("Ten");

tspan.innerText=t;

if(t==0){

clearInterval(int);

clearInterval(stuInterval);//延时特殊情况

}

},1000);

}

</script>

</html>

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