<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<canvas id="canvas" style="margin:0 auto;">
The current browser does not support Canvas, can replace the browser a try!
</canvas>
<script>
// 绘制矩形
function drawRect(ctx,x,y,width,height,borderWidth,borderColor,fillColor){
ctx.beginPath();
ctx.moveTo(x,y);
ctx.lineTo(x+width,y);
ctx.lineTo(x+width,y+height);
ctx.lineTo(x,y+height);
ctx.closePath();
ctx.lineWidth = borderWidth;
ctx.strokeStyle = borderColor;
ctx.fillStyle = fillColor;
ctx.fill();
ctx.stroke();
}
window.onload = function(){
var canvas = document.getElementById('canvas');
canvas.width = 1024;
canvas.height = 768;
if(canvas.getContext('2d')){
var context = canvas.getContext('2d');
drawRect(context,100,100,400,400,10,"blue","yellow")
}else{
alert('当前游览器不支持Canvas，请更换游览器后再试！');
}
}
</script>
</body>
</html>
