<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>锯齿</title> <script type="text/javascript"> window.addEventListener("load", eventWindowLoaded, false); function eventWindowLoaded(){ var x,y; var theCanvas = document.getElementById("canvas"); var context = theCanvas.getContext("2d"); context.strokeStyle = ‘#CB9A61‘; context.lineWidth=10; context.strokeRect(10, 10, theCanvas.width-20, theCanvas.height-20); context.fillStyle = "#FFFFFF"; for(x=5;x<=canvas.width;x=x+10){ context.beginPath(); context.arc(x,5,5,0,Math.PI*2,true); context.arc(x,canvas.height-5,5,0,Math.PI*2,true); context.closePath(); context.fill(); } for(y=5;y<=canvas.height;y=y+10){ context.beginPath(); context.arc(5,y,5,0,Math.PI*2,true); context.arc(canvas.width-5,y,5,0,Math.PI*2,true); context.closePath(); context.fill(); } } </script> </head> <body> <div style="position: absolute; top: 100px; left: 100px;"> <canvas id="canvas" width="400" height="170" top=50px; left=50px;> </div> </body> </html>
原文：http://www.cnblogs.com/vali/p/6755673.html