日期:2014-05-17 浏览次数:20708 次
translate.html内容如下:
<!DOCTYPE HTML> <html> <head> <script type="text/javascript" src="jquery-1.7.2.min.js"></script> <script type="text/javascript" src="translate.js"></script> <script type="text/javascript"> $(document).ready(function(){ }); </script> </head> <body> <canvas id="simple"></canvas> </body> </html>
(function(){ var canvas=null, context=null, angle=0; function resetCanvas(){ canvas=document.getElementById("simple"); canvas.width=window.innerWidth; canvas.height=window.innerHeight; context=canvas.getContext("2d"); } function animate(){ context.save(); try{ //清除画布 context.clearRect(0, 0, canvas.width, canvas.height); //设置原点 context.translate(canvas.width * 0.5, canvas.height * 0.5); //旋转角度 context.rotate(angle); //设置填充颜色 context.fillStyle = "#FF0000"; //绘制矩形 context.fillRect(-30, -30, 60, 60); angle += 0.05 * Math.PI; } finally{ context.restore(); } } $(window).bind("resize",resetCanvas).bind("reorient",resetCanvas); $(document).ready(function(){ window.scrollTo(0,1); resetCanvas(); setInterval(animate,40); }); })();