HTML5 Canvas示例

<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="UTF-8">
    <title>Canvas 示例</title>
  </head>
  <body>
    <!-- 定义400*300的画布 -->
    <canvas id="myCanvas" width="400" height="300"></canvas>
  </body>
</html>