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jQuery implements a slot machine-like rolling lottery effect_jquery

WBOY
WBOYOriginal
2016-05-16 15:46:492262browse

The example in this article describes how jQuery can achieve a rolling lottery effect similar to that of a slot machine. Share it with everyone for your reference. The details are as follows:

Jquery is used here to implement a web lottery function similar to a slot machine. It is just a simple investment function. There are still some places that need to be improved. For example, when the lottery is about to end, it will not automatically slow down. Which expert is interested? can be improved.

The effect is shown in the figure below:

The specific code is as follows: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery抽奖效果</title>
<style type="text/css">
*{padding:0px;margin:0px;}
body{font-size:12px;}
ul,li{ list-style:none;}
.choudiv{width:600px;margin:100px auto; position:relative;}
.choudiv .zblock{position:absolute;width:80px;height:80px; background:#09C; text-align:center;line-height:80px;}
.choudiv .li1{left:0px;top:0px;}
.choudiv .li2{left:80px;top:0px;}
.choudiv .li3{left:160px;top:0px;}
.choudiv .li4{left:240px;top:0px;}
.choudiv .li5{left:320px;top:0px;}
.choudiv .li6{left:320px;top:80px;}
.choudiv .li7{left:320px;top:160px;}
.choudiv .li8{left:240px;top:160px;}
.choudiv .li9{left:160px;top:160px;}
.choudiv .li10{left:80px;top:160px;}
.choudiv .li11{left:0px;top:160px;}
.choudiv .li12{left:0px;top:80px;}
.choudiv .zblock1{width:240px;height:80px; cursor:pointer;background:#f00; position:absolute;left:80px;top:80px; text-align:center;line-height:80px;}
</style>
<script type="text/javascript" src="jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(function(){ 
 $(".zblock1").on("click",function(){
  if(!$(this).hasClass("unuse")){
   $(this).addClass("unuse");
   var i=0;
   var num=parseInt(30+Math.random()*20);
   //这个后面会通过AJAX由程序给出
   var time=50;
   var j=parseInt(num/12);
   var leave=num%12;
   var oli=$("#outer").find("li"); 
   var timer=setInterval(function(){
    oli.css("opacity","1");
    if(j>0){
     if(i==12){
      i=0;
      j--;
      oli.eq(i).css("opacity","0.5");
     }else{
      oli.eq(i).css("opacity","0.5");
      i++; 
     }
    }else{
     if(i==leave){
      clearInterval(timer);
      oli.eq(i).css("opacity","0.5");
      alert("抽中了"+i+"号");
      $(".zblock1").removeClass("unuse");
     }else{
      oli.eq(i).css("opacity","0.5");
      i++;
     }
    }
   },50);
  }else{
   return false; 
  } 
 })
});
</script>
</head>
<body>
<div class="choudiv">
<ul id="outer">
 <li class="zblock li1">0</li>
 <li class="zblock li2">1</li>
 <li class="zblock li3">2</li>
 <li class="zblock li4">3</li>
 <li class="zblock li5">4</li>
 <li class="zblock li6">5</li>
 <li class="zblock li7">6</li>
 <li class="zblock li8">7</li>
 <li class="zblock li9">8</li>
 <li class="zblock li10">9</li>
 <li class="zblock li11">10</li>
 <li class="zblock li12">11</li>
</ul>
<div class="zblock1">开始</div> 
</div>
</body>
</html>

I hope this article will be helpful to everyone’s jquery programming design.

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