Canvas学习-1

简单示例

<!DOCTYPE html>
<html>
	<head>
		<style>
			body{
				background: #dddddd;
			}
			#canvas{
				margin:10px;
				padding:10px;
				background: #ffffff;
			}
		</style>
	</head>
	<body>
		<canvas id='canvas' width='600' height='300'>
			Canvas not supported
		</canvas>
		<script type="text/javascript">
			var canvas =document.getElementById('canvas');
			context=canvas.getContext('2d');
			context.font='38pt Arial';
			context.fillStyle='cornflowerblue';
			context.strokeStyle='blue';
			context.fillText('Hello Valentine',canvas.width/2-150,canvas.height/2+15);
			context.fillStroke('Hello Valentine',canvas.width/2-150,canvas.height/2+15);
		</script>
	</body>
	<footer></footer>
</html>

注意：canvas默认大小为300*150像素

注意：实用width与height而非css设置canvas的大小

效果：

 

posted @ 2014-12-23 13:20  valentine is me  阅读(181)  评论(0)  编辑  收藏  举报