武林网(www.vevb.com)文章简介：html5-canvas标签--绘制矩形。
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<title>html5-canvas标签--绘制矩形</title>
</head>
<body>
<canvas id=1 width=200 height=200></canvas>
<script type=text/javascript>
window.onload = function(){
var canva =document.getElementById('1')
var content =canva.getContext('2d')
content.fillStyle = #ccc;//填充canvas的背景颜色
content.fillRect(0, 0, 200, 200);//参数分别表示 x轴,y轴,宽度,高度
content.lineWidth = 4;//边框宽度
content.strokeStyle = #fff;//边框颜色
content.strokeRect(50,50,100,100);//边框坐标及大小
content.fillStyle = #f00;//矩形填充颜色
content.fillRect(50,50,100,100);//矩形坐标及大小
}
</script>
</body>
</html>