| 内容 | html5画简单的圆形代码分享,大家参考使用吧
 代码如下:
 <!DOCTYPE html><head>
 <meta charset=utf-8>
 <title>HTML5画圆形</title>
 <script src="<a href="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script">http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script</a>>
 </head>
 <script>
 $(document).ready(function(){
 var c=document.getElementById("drawbox");
 var draw=c.getContext("2d"); //获取2d内容的引用,调用绘图API</p> <p>draw.fillStyle="red"; //颜色
 draw.beginPath(); //从新画
 draw.arc(50,50,50,0,Math.PI*2,true); //圆心x坐标|圆心y坐标|直径|始|PI为圆周率,Math.PI*2为画圆|true为时针方向:逆时针,0为顺时针,
 draw.closePath(); //结束
 draw.fill();
 })
 </script>
 </body>
 <canvas id="drawbox" width="500" height="500"></canvas>
 </body>
 </html>
 
  
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