JS implements Ferris wheel lottery-JS Tutorial-php.cn

JS implements Ferris wheel lottery

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Release： 2018-05-03 15:55:10

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This time I will bring you JS to implement the Ferris wheel lottery. What are the precautions for JS to implement the Ferris wheel lottery? The following is a practical case, let's take a look.

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The code is as follows, copy and use:

<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title>幸运抽奖页面</title>
 <style>
  /*CSS代码*/
  *{
   padding:0;
   margin:0;
  }
  .login-box{
   width:500px;
   height:430px;
   /* border:1px solid red;*/
   /*水平居中*/
   margin:100px auto;
　　　　　　　<!-- 此处需要修改为自己的图片路径 -->
   background: url(img/tx1.png) no-repeat;
   box-shadow: 0 0 2px rgba(0,0,0,.5);
  }
  .login{
   padding:5px;
   border:0 none;
   background: #0a88e1;
   color: white;
   font-size:12px;
   text-align: center;
   width:220px;
   line-height: 20px;
   margin-top:200px;
   margin-left:120px;
  }
 </style>
</head>
<body>
 <p class="login-box">
  <input type="button" value="点击开始抽奖" class="login" id="luckbtn" onclick="luck()"/>
 </p>
</body>
<script>
 //JS代码：幸运抽奖
 var no = prompt("请输入您的四位会员卡号：");
 //获取到抽奖按钮
 document.getElementById("luckbtn").value =no+"-欢迎你，点击开始抽奖" ;
 //当点击抽奖按钮的时候调用，幸运抽奖的规则及提醒，功能 function 函数
 function luck(){
  //系统随机生成一个0-10之间的随机整数 :Math.random() 0-1之间的浮点数
  var num = parseInt(Math.random()*10);
  /*alert(num);*/
  //随机数=会员卡号的百位数
  /* var gewei = no%10;
  alert(gewei);*/
  /*var shiwei = parseInt(no/10%10);
  alert(shiwei);*/
  var baiwei = parseInt(no/100%10);
  /*alert(baiwei);*/
  if(baiwei == num){
   alert("恭喜"+no+",您中奖了！");
  }else{
   alert("对不起，"+no+"，您没有中奖！");
  }
 }
</script>
</html>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!