<!DOCTYPE html>
<html>
<head>
<title>first page</title>
</head>
<body>
<!--定义一个canvas-->
<canvas id="mycanvas" width="200" height="200"></canvas>
</body>
<script type="text/javascript">
var myc = document.getElementById("mycanvas");
<!--创建context对象-->
var hb = mycanvas.getContext("2d");
hb.fillStyle = "#bebebe";
hb.fillRect(0,0,10,750);
</script>
</html>
调试截图：
原文地址：http://blog.csdn.net/qingbowen/article/details/46547947
