canvas-2drawRectFun.html

时间：2021-08-10 04:06:11
<!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>

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