JS数字抽奖游戏实现方法
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" ? document.getElementById(id) : id;
},
$$: function (elem, oParent)
{
return (oParent || document).getElementsByTagName(elem);
},
addEvent: function (oElement, sEvent, fnHandler)
{
oElement.addEventListener ? oElement.addEventListener(sEvent, fnHandler, false) : oElement.attachEvent("on" + sEvent, fnHandler)
},
removeEvent: function (oElement, sEvent, fnHandler)
{
oElement.removeEventListener ? oElement.removeEventListener(sEvent, fnHandler, false) : oElement.detachEvent("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 ? obj.currentStyle[attr] : getComputedStyle(obj, null)[attr])
},
startMove: function (obj, pos, onEnd)
{
clearInterval(obj.timer);
var _this = this;
obj.timer = setInterval(function ()
{
_this.doMove(obj, pos, onEnd)
}, 30)
},
doMove: function (obj, pos, onEnd)
{
var iCurL = this.getStyle(obj, "left");
var iCurT = this.getStyle(obj, "top");
var iSpeedL = (pos.left - iCurL) / 5;
var iSpeedT = (pos.top - iCurT) / 5;
iSpeedL = iSpeedL > 0 ? Math.ceil(iSpeedL) : Math.floor(iSpeedL);
iSpeedT = iSpeedT > 0 ? Math.ceil(iSpeedT) : Math.floor(iSpeedT);
if (pos.left == iCurL && pos.top == iCurT)
{
clearInterval(obj.timer);
onEnd && onEnd()
}
else
{
obj.style.left = iCurL + iSpeedL + "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 ? -1 : 1;
},
createArr: function ()
{
for(var i=0; i<this.num+1; i++){
this.data.push(i);
}
this.data.sort(this.randomSort);
},
closeEvent: function ()
{
document.onmousedown=document.onmousemove=document.oncontextmenu=function()
{
return false;
}
},
startDraw: function ()
{
var _this = this;
document.onkeyup = function ( ev )
{
var ev = ev || window.event;
if(ev.keyCode == 13 || ev.keyCode == 32){
if(_this.btn && _this.timer){
if(_this.obj[_this.obj.length-1].btn){
_this.Play ();
_this.btn = !_this.btn;
_this.timer = !_this.timer;
}
}else{
if(_this.obj[_this.obj.length-1].btn){
_this.Stop ();
_this.btn = !_this.btn;
_this.timer = !_this.timer;
}
}
return false;
}else{
return false;
}
}
},
Play: function ()
{
if(this.timer && this.btn){
var t = 0;
for(var i=0; i<this.obj.length; i++){
this.obj[i].btn = false;
this.playTimer (this.obj[i],t);
t += 1500;
}
}else{
return false;
}
},
playTimer: function (obj,t)
{
var _this = this;
setTimeout(function(){
_this.Move (obj);
},t)
},
Del: function (a)
{
for(var i=0; i<this.data.length; i++){
if(a == this.data[i]){
this.data.splice(i,1);
}
}
},
Stop: function ()
{
if(!this.timer && !this.btn){
var n = this.num + 1;
var r = this.data[Math.floor(Math.random() * (0-n) + n)];
this.show = r;
this.Del (r);
r = r.toString().split("");
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="images/20153291274950386.jpg" />
</div>
<div id="showback">100</div>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。
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