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function drawcircle(id,x,y,r){ var ca = document.getElementById(id); var cans = ca.getContext("2d"); cans.globalCompositeOperation = "destination-out"; cans.beginPath(); cans.arc(x,y,r,0,Math.PI*2); //解决兼容 ca.style.display = ‘none’; ca.offsetHeight; ca.style.display = ‘inherit’; //解决兼容 cans.fillStyle="#000"; cans.fill(); } 这样可以解决
参考自:http://bbs.csdn.net/topics/390808206
解决在android里面(三星s3)等一些4.1系统的手机上cancas刮刮乐无效
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原文地址:http://my.oschina.net/u/2255569/blog/359234