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本文实例讲述了JS数字抽奖游戏实现方法。分享给大家供大家参考。具体实现方法如下:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>新年网页抽奖程序</title>
<style type="text/css">
* {margin:0; padding:0;}
ul,li {list-style-type:none;}
body {overflow:hidden;}
#back {width:100%; height:100%;
background:#f5f5f5; position:absolute; z-index:1;
}
#box {width:360px; height:100px;
position:absolute; z-index:3; top:50%; left:50%;
margin-top:-50px; margin-left:-180px; text-align:center;
}
#box1,#box2,#box3 {width:100px; height:100px;
line-height:100px;
float:left; background:#321c24; 
border:10px #321c24 solid;
border-radius:50%; position:relative; overflow:hidden;
}
#box1 ul,#box2 ul,#box3 ul {color:#fff; font-size:68px; 
font-family:"Arial Black"; text-align:center;
width:100px; height:100px; line-height:100px;
position:absolute; top:0; left:0;
}
#box1 ul li,#box2 ul li,#box3 ul li {
width:100px; height:100px;
background:red; border-radius:50%;
}
</style>
<script type="text/javascript">
var AIR = {
 $: function (id)
 {
  return typeof id === "string" "on" + sEvent, fnHandler) 
 },
 removeEvent: function (oElement, sEvent, fnHandler) 
 {
  oElement.removeEventListener "on" + sEvent, fnHandler)
 }, 
 getElementClient: function (){
  var arr = [];
  if (document.documentElement && document.documentElement.clientHeight && document.documentElement.clientWidth){
   arr.push(document.documentElement.clientWidth);
   arr.push(document.documentElement.clientHeight);
   return arr;
  }
 },
 getStyle: function (obj, attr)
 {
  return parseFloat(obj.currentStyle "left");
  var iCurT = this.getStyle(obj, "top");
  var iSpeedL = (pos.left - iCurL) / 5;
  var iSpeedT = (pos.top - iCurT) / 5;
  iSpeedL = iSpeedL > 0 "px";
   obj.style.top = iCurT + iSpeedT + "px"; 
  }
 }
}
function Draw (obj, num)
{
 this.obj = obj;
 this.num = num;
 this.data = [];
 this.result = [];
 this.show = 0;
 this.btn = true;
 this.timer = true;
 this.h = 0;
 this.uh = 0;
 this.initialize();  
}
Draw.prototype = {
 initialize: function ()
 {
  this.createArr ();
  this.createElement ();
  this.closeEvent ();
  this.startDraw (); 
 },
 createElement: function ()
 {
  for(var j=0; j<this.obj.length; j++){ 
   var ul = document.createElement("ul");
   for(var i=0; i<10; i++){
    var li = document.createElement("li");
    li.innerHTML = i;
    ul.appendChild(li) 
   } 
   this.obj[j].appendChild(ul);
   this.obj[j].btn = true;
   AIR.$$("ul",this.obj[j])[0].innerHTML += AIR.$$("ul",this.obj[j])[0].innerHTML;  
  } 
  var UL = AIR.$$("ul",this.obj[0])[0];
  this.h = AIR.getStyle(AIR.$$("li",UL)[0],"height");
  this.uh = AIR.$$("li",UL).length * this.h
 },
 randomSort: function (a, b) {
  return Math.random()>.5 "");
   var c = this.obj.length - r.length;
   if(r.length < this.obj.length){
    for(var i=0; i<c; i++){
     r.unshift(0) 
    } 
   }
   this.result = r; 
   //document.title = r+" : "+this.data; 
   var t = 0;
   for(var i=0; i<this.obj.length; i++){
    this.obj[i].btn = false;
    this.obj[i].index = i;
    this.obj[i].num = this.result[this.obj[i].index];
    this.stopTimer (this.obj[i],t); 
    t += 1500;
   }
  }
 },
 stopTimer: function (obj,t)
 {
  var _this = this;
  setTimeout(function(){
   _this.showResult (obj);
  },t)
 },
 showResult: function (obj)
 { 
  var _this = this;
  this.timer = true;
  this.btn = true;
  obj.btn = false;
  obj.vh = -obj.num * this.h;
  obj.timeOut = setInterval(function(){
   obj.speed -= 1;
   if(obj.speed == 1){
    clearInterval(obj.timeOut); 
    clearInterval(obj.timer);
    obj.timer = setInterval(function(){
     if(obj.ul.offsetTop >= obj.vh){
      clearInterval(obj.timer);
      AIR.startMove(obj.ul,{left:0,top:obj.vh},function(){
       obj.btn = true; 
       var set = true;
       for(var i=0; i<_this.obj.length; i++){
        if(!_this.obj[i].btn){
         set = false;  
        }
       }
       if(set){
        _this.Open(_this.show) 
       }
      });
     }
     obj.ul.style.top = obj.ul.offsetTop + obj.speed +"px"; 
    },30);
   }
  },100);  
 },
 Open: function (num)
 {
  document.title += " "+ num;
 },
 Move: function (obj)
 {
  var _this = this;
  var obj = obj;
  obj.btn = false;
  obj.timer = null;
  obj.speed = 1;
  obj.ul = AIR.$$("ul",obj)[0];
  obj.ul.style.height = this.uh +"px";
  obj.timer = setInterval(function(){
   if(obj.ul.offsetTop > 0){
    obj.ul.style.top = -(_this.uh/2) +"px";
   }
   obj.ul.style.top = obj.ul.offsetTop + obj.speed +"px"; 
  },30);
  obj.timeOut = setInterval(function(){
   obj.speed += 1;
   if(obj.speed == 30){
    clearInterval(obj.timeOut);
    obj.btn = true; 
   }
  },300) 
 }
}
var initialize = function ()
{
 new Draw ([AIR.$("box1"),AIR.$("box2"),AIR.$("box3")],100);
 reSize ();
}
var reSize = function ()
{
 var v = AIR.getElementClient();
 AIR.$$("img",AIR.$("back"))[0].width = v[0];
 AIR.$$("img",AIR.$("back"))[0].height = v[1]; 
}
AIR.addEvent(window,"load",initialize);
AIR.addEvent(window,"resize",reSize);
</script>
</head>
<body>
<div id="box">
 <div id="box1"></div>
 <div id="box2"></div>
 <div id="box3"></div>
 <div style="clear:both"></div>
</div>
<div id="back">
 <img src="/UploadFiles/2021-04-02/20153291274950386.jpg">

希望本文所述对大家的javascript程序设计有所帮助。

标签:
JS,数字,抽奖游戏

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