对于画布的双缓冲，创建第二个画布元素并在其上绘制。之后使用drawimage()方法将图像绘制到第一个画布上。
// canvas elementvar canvas1 = document.getelementbyid('canvas');var context1 = canvas1.getcontext('2d');// buffer canvasvar canvas2 = document.createelement('canvas');canvas2.width = 250;canvas2.height =250;var context2 = canvas2.getcontext('2d');// create on the canvascontext2.beginpath();context2.moveto(10,10);context2.lineto(10,30);context2.stroke();//render the buffered canvascontext1.drawimage(canvas2, 0, 0);
以上就是html5 canvas支持双缓冲吗？的详细内容。