本文实例为大家分享了js随机点名器的具体代码,供大家参考,具体内容如下
- <html lang="zh">
- <head>
- <Meta charset="UTF-8">
- <Meta name="viewport" content="width=device-width,initial-scale=1.0">
- <Meta http-equiv="X-UA-Compatible" content="ie=edge">
- <title>随机抽签</title>
- </head>
- <body>
- <center>
- <div id="d" style="background: #7A7A7A;width: 250px;"><!-- 设置背景框颜色和长度 -->
- <h1 id = 'name'></h1> <!-- 用于显示随机的人名 -->
- </div>
- <div>
- <button id = 'start' type="button">开始</button>
- </div>
- <div>
- <button id = 'temp' type="button">暂停</button>
- </div>
- </center>
- </body>
- </html>
- <script type="text/javascript">
- window.onload=function(){
- var names = ['name','name','name']; //人名数组
- var clors = ['#EE0000','#CAE1FF','#008B8B','#CDC9C9','#F0F8FF'];//颜色数组
- var name = document.getElementById('name'); //获取id为name的元素
- var d = document.getElementById('d');
- var temp = document.getElementById('temp');
- var startR = -1; //记录计时器的序号
- var start = document.getElementById('start');
- function Random(){ //产生随机数,并更改h1中的内容与颜色
- var nNum = Math.floor(Math.random()*5); //这里的5为你当前人名的数量
- var cNum = Math.floor(Math.random()*5);
- name.innerHTML = names[nNum];
- d.style.color = clors[cNum];
- }
- start.onclick = function(){ //单击开始方法
- if(startR == -1) //不加限制,多次点击开始会有多个计时器启动
- startR = setInterval(Random,25);//设置计时器,每0.025秒执行一次
- }
- temp.onclick = function(){ //单击暂停方法
- clearInterval(startR);
- startR = -1;
- }
- }
- </script>
具体展示