小旋风SEO教程 TIY
编辑您的代码：
<!DOCTYPE html><html><body><canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"> Your browser does not support the HTML5 canvas tag. </canvas><script> var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); ctx.rotate(20*Math.PI/180); ctx.fillRect(50,20,100,50); </script></body></html>
查看结果: