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Native javascript implements Jiugongge lottery effect code

零下一度Original: 2018-05-11 13:55:415596browse

This article mainly introduces the native javascript to implement the Jiugongge lottery effect code. Has very good reference value. Let’s take a look at it with the editor below

Rendering:

##The code is as follows:

<!DOCTYPE html>
<html>
<head>
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <title></title>
 <style>
 *{margin:0;padding:0;}
 #container{width:310px;height:310px;margin:30px auto;}
 #ul1{width:310px;height:310px;list-style:none;}
 #ul1 li,#ul1 a{width:100px;height:100px;border:1px solid #565656;float:left;text-align:center;line-height:100px;}
 #ul1 a:hover{cursor:pointer;color:orange;font-size:18px;}
 #ul1 .active{background:red;color:#fff;}
 #pp{line-height:32px;color:#9a9a9a;text-align:center;}
 </style>
</head>
<body>
<p id="container">
 <ul id="ul1">
 <li>一等奖</li>
 <li>二等奖</li>
 <li>三等奖</li>
 <li>四等奖</li>
 <a>开始</a>
 <li>五等奖</li>
 <li>六等奖</li>
 <li>七等奖</li>
 <li>八等奖</li>
 </ul>
 <p id="pp"></p>
</p>
<script>
 var container = document.getElementById(&#39;container&#39;),
 li = container.getElementsByTagName(&#39;li&#39;),
 aa = container.getElementsByTagName(&#39;a&#39;)[0],
 pp = document.getElementById(&#39;pp&#39;),
 timer = null;
 function start(){
 var i = 0;
 var num = Math.floor(Math.random() * li.length) + 20;
 if(i<num){
 timer = setInterval(function(){
 for(var j=0;j<li.length;j++){
  li[j].className = &#39;&#39;;
 }
 li[i%li.length].className = &#39;active&#39;;
 i++;
 if(i === num){
  clearInterval(timer);
  if(num%li.length === 0){
  pp.innerHTML += "恭喜您中了：8 等奖" + &#39;<br/>&#39;;
  }else{
  pp.innerHTML += "恭喜您中了："+ parseInt(num%li.length) + " 等奖"+ &#39;<br/>&#39;;
  }
 }
 },130);
 }
 }
 aa.onclick = function(){
 start();
 }
</script>
</body>
</html>

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