安科网
源代码:
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>安科教程(www.ancii.com)</title> </head> <body> <canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;"> 您的浏览器不支持 HTML5 canvas 标签。 </canvas> <script> var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); ctx.strokeRect(5,5,25,15); ctx.scale(2,2); ctx.strokeRect(5,5,25,15); </script> </body> </html>
运行结果
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