需要三张图片进行布局，
全部代码为
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>抽奖</title>
<meta name="keywords" content="">
<meta name="description" content="">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="renderer" content="webkit">
<style>
.g-content {
width: 100%;
background: #fbe3cc;
height: auto;
font-family: "微软雅黑", "microsoft yahei";
}
.g-content .g-lottery-case {
width: 500px;
margin: 0 auto;
overflow: hidden;
}
.g-content .g-lottery-case .g-left h2 {
font-size: 20px;
line-height: 32px;
font-weight: normal;
margin-left: 20px;
}
.g-content .g-lottery-case .g-left {
width: 450px;
float: left;
}
.g-lottery-box {
width: 400px;
height: 400px;
margin-left: 30px;
position: relative;
background: url(ly-plate-c.gif) no-repeat;
}
.g-lottery-box .g-lottery-img {
width: 340px;
height: 340px;
position: relative;
background: url(bg-lottery.png) no-repeat;
left: 30px;
top: 30px;
}
.g-lottery-box .playbtn {
width: 186px;
height: 186px;
position: absolute;
top: 50%;
left: 50%;
margin-left: -94px;
margin-top: -94px;
background: url(playbtn.png) no-repeat;
}
</style>
</head>
<body>
<div class="g-content">
<div class="g-lottery-case">
<div class="g-left">
<h2>您已拥有<span class="playnum"></span>次抽奖机会，点击立刻抽奖！~</h2>
<div class="g-lottery-box">
<div class="g-lottery-img">
</div>
<a class="playbtn" href="javascript:;" rel="external nofollow" rel="external nofollow" title="开始抽奖"></a>
</div>
</div>
</div>
</div>
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript" src="jquery.rotate.min.js"></script>
<script>
$(function() {
var $btn = $('.g-lottery-img');// 旋转的div
var playnum = 5; //初始次数，由后台传入
$('.playnum').html(playnum);//显示还剩下多少次抽奖机会
var isture = 0;//是否正在抽奖
var clickfunc = function() {
var data = [1, 2, 3, 4, 5, 6];//抽奖
//data为随机出来的结果，根据概率后的结果
data = data[Math.floor(Math.random() * data.length)];//1~6的随机数
switch(data) {
case 1:
rotateFunc(1, 0, '恭喜您获得2000元理财金');
break;
case 2:
rotateFunc(2, 0, '恭喜您获得2000元理财金2');
break;
case 3:
rotateFunc(3, 0, '恭喜您获得2000元理财金3');
break;
case 4:
rotateFunc(4, -60, '谢谢参与4');
break;
case 5:
rotateFunc(5, 120, '谢谢参与5');
break;
case 6:
rotateFunc(6, 120, '谢谢参与6');
break;
}
}
$(".playbtn").click(function() {
if(isture) return; // 如果在执行就退出
isture = true; // 标志为 在执行
if(playnum <= 0) { //当抽奖次数为0的时候执行
alert("没有次数了");
$('.playnum').html(0);//次数显示为0
isture = false;
} else { //还有次数就执行
playnum = playnum - 1; //执行转盘了则次数减1
if(playnum <= 0) {
playnum = 0;
}
$('.playnum').html(playnum);
clickfunc();
}
});
var rotateFunc = function(awards, angle, text) {
isture = true;
$btn.stopRotate();
$btn.rotate({
angle: 0,//旋转的角度数
duration: 4000, //旋转时间
animateTo: angle + 1440, //给定的角度,让它根据得出来的结果加上1440度旋转
callback: function() {
isture = false; // 标志为 执行完毕
alert(text);
}
});
};
});
</script>
</body>
</html>
jquery.rotate.min.js代码：
// VERSION: 2.3 LAST UPDATE: 11.07.2013
/*
* Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
*
* Made by Wilq32, [email protected], Wroclaw, Poland, 01.2009
* Website: http://code.google.com/p/jqueryrotate/
*/
(function($) {
var supportedCSS,supportedCSSOrigin, styles=document.getElementsByTagName("head")[0].style,toCheck="transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
for (var a = 0; a < toCheck.length; a++) if (styles[toCheck[a]] !== undefined) { supportedCSS = toCheck[a]; }
if (supportedCSS) {
supportedCSSOrigin = supportedCSS.replace(/[tT]ransform/,"TransformOrigin");
if (supportedCSSOrigin[0] == "T") supportedCSSOrigin[0] = "t";
}
// Bad eval to preven google closure to remove it from code o_O
eval('IE = "v"=="\v"');
jQuery.fn.extend({
rotate:function(parameters)
{
if (this.length===0||typeof parameters=="undefined") return;
if (typeof parameters=="number") parameters={angle:parameters};
var returned=[];
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {
var paramClone = $.extend(true, {}, parameters);
var newRotObject = new Wilq32.PhotoEffect(element,paramClone)._rootObj;
returned.push($(newRotObject));
}
else {
element.Wilq32.PhotoEffect._handleRotation(parameters);
}
}
return returned;
},
getRotateAngle: function(){
var ret = [];
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (element.Wilq32 && element.Wilq32.PhotoEffect) {
ret[i] = element.Wilq32.PhotoEffect._angle;
}
}
return ret;
},
stopRotate: function(){
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (element.Wilq32 && element.Wilq32.PhotoEffect) {
clearTimeout(element.Wilq32.PhotoEffect._timer);
}
}
}
});
// Library agnostic interface
Wilq32=window.Wilq32||{};
Wilq32.PhotoEffect=(function(){
if (supportedCSS) {
return function(img,parameters){
img.Wilq32 = {
PhotoEffect: this
};
this._img = this._rootObj = this._eventObj = img;
this._handleRotation(parameters);
}
} else {
return function(img,parameters) {
this._img = img;
this._onLoadDelegate = [parameters];
this._rootObj=document.createElement('span');
this._rootObj.style.display="inline-block";
this._rootObj.Wilq32 =
{
PhotoEffect: this
};
img.parentNode.insertBefore(this._rootObj,img);
if (img.complete) {
this._Loader();
} else {
var self=this;
// TODO: Remove jQuery dependency
jQuery(this._img).bind("load", function(){ self._Loader(); });
}
}
}
})();
Wilq32.PhotoEffect.prototype = {
_setupParameters : function (parameters){
this._parameters = this._parameters || {};
if (typeof this._angle !== "number") { this._angle = 0 ; }
if (typeof parameters.angle==="number") { this._angle = parameters.angle; }
this._parameters.animateTo = (typeof parameters.animateTo === "number") ? (parameters.animateTo) : (this._angle);
this._parameters.step = parameters.step || this._parameters.step || null;
this._parameters.easing = parameters.easing || this._parameters.easing || this._defaultEasing;
this._parameters.duration = parameters.duration || this._parameters.duration || 1000;
this._parameters.callback = parameters.callback || this._parameters.callback || this._emptyFunction;
this._parameters.center = parameters.center || this._parameters.center || ["50%","50%"];
if (typeof this._parameters.center[0] == "string") {
this._rotationCenterX = (parseInt(this._parameters.center[0],10) / 100) * this._imgWidth * this._aspectW;
} else {
this._rotationCenterX = this._parameters.center[0];
}
if (typeof this._parameters.center[1] == "string") {
this._rotationCenterY = (parseInt(this._parameters.center[1],10) / 100) * this._imgHeight * this._aspectH;
} else {
this._rotationCenterY = this._parameters.center[1];
}
if (parameters.bind && parameters.bind != this._parameters.bind) { this._BindEvents(parameters.bind); }
},
_emptyFunction: function(){},
_defaultEasing: function (x, t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b },
_handleRotation : function(parameters, dontcheck){
if (!supportedCSS && !this._img.complete && !dontcheck) {
this._onLoadDelegate.push(parameters);
return;
}
this._setupParameters(parameters);
if (this._angle==this._parameters.animateTo) {
this._rotate(this._angle);
}
else {
this._animateStart();
}
},
_BindEvents:function(events){
if (events && this._eventObj)
{
// Unbinding previous Events
if (this._parameters.bind){
var oldEvents = this._parameters.bind;
for (var a in oldEvents) if (oldEvents.hasOwnProperty(a))
// TODO: Remove jQuery dependency
jQuery(this._eventObj).unbind(a,oldEvents[a]);
}
this._parameters.bind = events;
for (var a in events) if (events.hasOwnProperty(a))
// TODO: Remove jQuery dependency
jQuery(this._eventObj).bind(a,events[a]);
}
},
_Loader:(function()
{
if (IE)
return function() {
var width=this._img.width;
var height=this._img.height;
this._imgWidth = width;
this._imgHeight = height;
this._img.parentNode.removeChild(this._img);
this._vimage = this.createVMLNode('image');
this._vimage.src=this._img.src;
this._vimage.style.height=height+"px";
this._vimage.style.width=width+"px";
this._vimage.style.position="absolute"; // FIXES IE PROBLEM - its only rendered if its on absolute position!
this._vimage.style.top = "0px";
this._vimage.style.left = "0px";
this._aspectW = this._aspectH = 1;
/* Group minifying a small 1px precision problem when rotating object */
this._container = this.createVMLNode('group');
this._container.style.width=width;
this._container.style.height=height;
this._container.style.position="absolute";
this._container.style.top="0px";
this._container.style.left="0px";
this._container.setAttribute('coordsize',width-1+','+(height-1)); // This -1, -1 trying to fix ugly problem with small displacement on IE
this._container.appendChild(this._vimage);
this._rootObj.appendChild(this._container);
this._rootObj.style.position="relative"; // FIXES IE PROBLEM
this._rootObj.style.width=width+"px";
this._rootObj.style.height=height+"px";
this._rootObj.setAttribute('id',this._img.getAttribute('id'));
this._rootObj.className=this._img.className;
this._eventObj = this._rootObj;
var parameters;
while (parameters = this._onLoadDelegate.shift()) {
this._handleRotation(parameters, true);
}
}
else return function () {
this._rootObj.setAttribute('id',this._img.getAttribute('id'));
this._rootObj.className=this._img.className;
this._imgWidth=this._img.naturalWidth;
this._imgHeight=this._img.naturalHeight;
var _widthMax=Math.sqrt((this._imgHeight)*(this._imgHeight) + (this._imgWidth) * (this._imgWidth));
this._width = _widthMax * 3;
this._height = _widthMax * 3;
this._aspectW = this._img.offsetWidth/this._img.naturalWidth;
this._aspectH = this._img.offsetHeight/this._img.naturalHeight;
this._img.parentNode.removeChild(this._img);
this._canvas=document.createElement('canvas');
this._canvas.setAttribute('width',this._width);
this._canvas.style.position="relative";
this._canvas.style.left = -this._img.height * this._aspectW + "px";
this._canvas.style.top = -this._img.width * this._aspectH + "px";
this._canvas.Wilq32 = this._rootObj.Wilq32;
this._rootObj.appendChild(this._canvas);
this._rootObj.style.width=this._img.width*this._aspectW+"px";
this._rootObj.style.height=this._img.height*this._aspectH+"px";
this._eventObj = this._canvas;
this._cnv=this._canvas.getContext('2d');
var parameters;
while (parameters = this._onLoadDelegate.shift()) {
this._handleRotation(parameters, true);
}
}
})(),
_animateStart:function()
{
if (this._timer) {
clearTimeout(this._timer);
}
this._animateStartTime = +new Date;
this._animateStartAngle = this._angle;
this._animate();
},
_animate:function()
{
var actualTime = +new Date;
var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;
// TODO: Bug for animatedGif for static rotation ? (to test)
if (checkEnd && !this._parameters.animatedGif)
{
clearTimeout(this._timer);
}
else
{
if (this._canvas||this._vimage||this._img) {
var angle = this._parameters.easing(0, actualTime - this._animateStartTime, this._animateStartAngle, this._parameters.animateTo - this._animateStartAngle, this._parameters.duration);
this._rotate((~~(angle*10))/10);
}
if (this._parameters.step) {
this._parameters.step(this._angle);
}
var self = this;
this._timer = setTimeout(function()
{
self._animate.call(self);
}, 10);
}
// To fix Bug that prevents using recursive function in callback I moved this function to back
if (this._parameters.callback && checkEnd){
this._angle = this._parameters.animateTo;
this._rotate(this._angle);
this._parameters.callback.call(this._rootObj);
}
},
_rotate : (function()
{
var rad = Math.PI/180;
if (IE)
return function(angle)
{
this._angle = angle;
this._container.style.rotation=(angle%360)+"deg";
this._vimage.style.top = -(this._rotationCenterY - this._imgHeight/2) + "px";
this._vimage.style.left = -(this._rotationCenterX - this._imgWidth/2) + "px";
this._container.style.top = this._rotationCenterY - this._imgHeight/2 + "px";
this._container.style.left = this._rotationCenterX - this._imgWidth/2 + "px";
}
else if (supportedCSS)
return function(angle){
this._angle = angle;
this._img.style[supportedCSS]="rotate("+(angle%360)+"deg)";
this._img.style[supportedCSSOrigin]=this._parameters.center.join(" ");
}
else
return function(angle)
{
this._angle = angle;
angle=(angle%360)* rad;
// clear canvas
this._canvas.width = this._width;//+this._widthAdd;
this._canvas.height = this._height;//+this._heightAdd;
// REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
this._cnv.translate(this._imgWidth*this._aspectW,this._imgHeight*this._aspectH); // at least center image on screen
this._cnv.translate(this._rotationCenterX,this._rotationCenterY); // we move image back to its orginal
this._cnv.rotate(angle); // rotate image
this._cnv.translate(-this._rotationCenterX,-this._rotationCenterY); // move image to its center, so we can rotate around its center
this._cnv.scale(this._aspectW,this._aspectH); // SCALE - if needed ;)
this._cnv.drawImage(this._img, 0, 0); // First - we draw image
}
})()
}
if (IE)
{
Wilq32.PhotoEffect.prototype.createVMLNode=(function(){
document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
try {
!document.namespaces.rvml && document.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
return function (tagName) {
return document.createElement('<rvml:' + tagName + ' class="rvml">');
};
} catch (e) {
return function (tagName) {
return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
};
}
})();
}
})(jQuery);
参考博客： https://www.jb51.net/article/121844.htm?utm_source=debugrun&utm_medium=referral