XML/HTML代码
<div class="container"> 
 <img src="images/1.png" id="shan-img" style="display:none;" /> 
 <img src="images/2.png" id="sorry-img" style="display:none;" /> 
 <div class="banner"> 
 <div class="turnplate" style="background-image:url(images/turnplate-bg.png);background-size:100% 100%;"> 
  <canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas> 
  <img class="pointer" src="images/turnplate-pointer.png"/> 
 </div> 
 </div> 
</div> 

.banner{display:block;width:95%;margin-left:auto;margin-right:auto;margin-bottom: 20px;} 
.banner .turnplate{display:block;width:100%;position:relative;} 
.banner .turnplate canvas.item{width:100%;} 
.banner .turnplate img.pointer{position:absolute;width:31.5%;height:42.5%;left:34.6%;top:23%;} 

var turnplate={ 
 restaraunts:[],  //大转盘奖品名称 
 colors:[],   //大转盘奖品区块对应背景颜色 
 outsideRadius:192,  //大转盘外圆的半径 
 textRadius:155,  //大转盘奖品位置距离圆心的距离 
 insideRadius:68,  //大转盘内圆的半径 
 startAngle:0,  //开始角度 
  
 bRotate:false  //false:停止;ture:旋转 
}; 
 
$(document).ready(function(){ 
 //动态添加大转盘的奖品与奖品区域背景颜色 
 turnplate.restaraunts = ["50M免费流量包", "10金币", "谢谢参与", "5金币", "10M免费流量包", "20M免费流量包", "20金币 ", "30M免费流量包", "100M免费流量包", "2金币"]; 
 turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF"]; 
 
  
 var rotateTimeOut = function (){ 
 $('#wheelcanvas').rotate({ 
  angle:0, 
  animateTo:2160, 
  duration:8000, 
  callback:function (){ 
  alert('网络超时，请检查您的网络设置！'); 
  } 
 }); 
 }; 
 
 //旋转转盘 item:奖品位置; txt：提示语; 
 var rotateFn = function (item, txt){ 
 var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length*2)); 
 if(angles<270){ 
  angles = 270 - angles; 
 }else{ 
  angles = 360 - angles + 270; 
 } 
 $('#wheelcanvas').stopRotate(); 
 $('#wheelcanvas').rotate({ 
  angle:0, 
  animateTo:angles+1800, 
  duration:8000, 
  callback:function (){ 
  alert(txt); 
  turnplate.bRotate = !turnplate.bRotate; 
  } 
 }); 
 }; 
 
 $('.pointer').click(function (){ 
 if(turnplate.bRotate)return; 
 turnplate.bRotate = !turnplate.bRotate; 
 //获取随机数(奖品个数范围内) 
 var item = rnd(1,turnplate.restaraunts.length); 
 //奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288] 
 rotateFn(item, turnplate.restaraunts[item-1]); 
 }); 
}); 
 
function rnd(n, m){ 
 var random = Math.floor(Math.random()*(m-n+1)+n); 
 return random; 
  
} 
 
 
//页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染 
window.onload=function(){ 
 drawRouletteWheel(); 
}; 
 
function drawRouletteWheel() {  
 var canvas = document.getElementById("wheelcanvas");  
 if (canvas.getContext) { 
 //根据奖品个数计算圆周角度 
 var arc = Math.PI / (turnplate.restaraunts.length/2); 
 var ctx = canvas.getContext("2d"); 
 //在给定矩形内清空一个矩形 
 ctx.clearRect(0,0,422,422); 
 //strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式 
 ctx.strokeStyle = "#FFBE04"; 
 //font 属性设置或返回画布上文本内容的当前字体属性 
 ctx.font = '16px Microsoft YaHei';  
 for(var i = 0; i < turnplate.restaraunts.length; i++) {   
  var angle = turnplate.startAngle + i * arc; 
  ctx.fillStyle = turnplate.colors[i]; 
  ctx.beginPath(); 
  //arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线（用于创建圆或部分圆）  
  ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);  
  ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true); 
  ctx.stroke(); 
  ctx.fill(); 
  //锁画布(为了保存之前的画布状态) 
  ctx.save();  
   
  //----绘制奖品开始---- 
  ctx.fillStyle = "#E5302F"; 
  var text = turnplate.restaraunts[i]; 
  var line_height = 17; 
  //translate方法重新映射画布上的 (0,0) 位置 
  ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius); 
   
  //rotate方法旋转当前的绘图 
  ctx.rotate(angle + arc / 2 + Math.PI / 2); 
   
  /** 下面代码根据奖品类型、奖品名称长度渲染不同效果，如字体、颜色、图片效果。(具体根据实际情况改变) **/ 
  if(text.indexOf("M")>0){//流量包 
  var texts = text.split("M"); 
  for(var j = 0; j<texts.length; j++){ 
   ctx.font = j == 0?'bold 20px Microsoft YaHei':'16px Microsoft YaHei'; 
   if(j == 0){ 
   ctx.fillText(texts[j]+"M", -ctx.measureText(texts[j]+"M").width / 2, j * line_height); 
   }else{ 
   ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height); 
   } 
  } 
  }else if(text.indexOf("M") == -1 && text.length>6){//奖品名称长度超过一定范围 
  text = text.substring(0,6)+"||"+text.substring(6); 
  var texts = text.split("||"); 
  for(var j = 0; j<texts.length; j++){ 
   ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height); 
  } 
  }else{ 
  //在画布上绘制填色的文本。文本的默认颜色是黑色 
  //measureText()方法返回包含一个对象，该对象包含以像素计的指定字体宽度 
  ctx.fillText(text, -ctx.measureText(text).width / 2, 0); 
  } 
   
  //添加对应图标 
  if(text.indexOf("金币")>0){ 
  var img= document.getElementById("shan-img"); 
  img.onload=function(){ 
   ctx.drawImage(img,-15,10);  
  }; 
  ctx.drawImage(img,-15,10); 
  }else if(text.indexOf("谢谢参与")>=0){ 
  var img= document.getElementById("sorry-img"); 
  img.onload=function(){ 
   ctx.drawImage(img,-15,10);  
  }; 
  ctx.drawImage(img,-15,10); 
  } 
  //把当前画布返回（调整）到上一个save()状态之前 
  ctx.restore(); 
  //----绘制奖品结束---- 
 }  
 } 
}