Created
October 2, 2014 10:38
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在Canvas上绘制一个矩形
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Canvas Rectangle</title> | |
| <style> | |
| body { | |
| background-color: #eee; | |
| } | |
| #outer { | |
| margin: 40px; | |
| } | |
| #canvas { | |
| border: 10px yellow solid; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="outer"> | |
| <canvas id="canvas" width="400" height="400"> | |
| Your browser doesn't support the canvas! | |
| </canvas> | |
| </div> | |
| <script> | |
| var mycanvas = document.getElementById("canvas"); | |
| var ctx = mycanvas.getContent("2d"); | |
| ctx.fillStyle = "rgb(255,0,255)"; | |
| ctx.fillRect(30, 30, 400, 400); | |
| ctx.fillStyle = "rgba(0,0,0,0.5)"; | |
| ctx.fillRect(60,60,200,200); | |
| ctx.fillStyle = "rgba(0,0,0,0.25)"; | |
| ctx.fillRect(90,90,400,400); | |
| </script> | |
| </body> | |
| </html> |
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