使用closePath()闭合图形
首先我们用最普通的方法绘制一个矩形。
JavaScript Code复制内容到剪贴板
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>绘制矩形</title>
</head>
<body>
<div id="canvas-warp">
<canvas id="canvas" style="border: 1px solid #aaaaaa; display: block; margin: 50px auto;">
你的浏览器居然不支持Canvas？！赶快换一个吧！！
</canvas>
</div>
<script>
window.onload = function(){
var canvas = document.getElementById("canvas");
canvas.width = 800;
canvas.height = 600;
var context = canvas.getContext("2d");
context.beginPath();
context.moveTo(150,50);
context.lineTo(650,50);
context.lineTo(650,550);
context.lineTo(150,550);
context.lineTo(150,50); //绘制最后一笔使图像闭合
context.lineWidth = 5;
context.strokeStyle = "black";
context.stroke();
}
</script>
</body>
</html>
</body>
</html>
