canvas描绘渐变的矩形

时间：2023-03-10 01:30:19
canvas描绘渐变的矩形 
<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>渐变的矩形</title>

<script>

    window.onload = function(){

        var c = document.getElementById('c');

        var ctx = c.getContext('2d');

        //创建线型渐变对象

        var jb = ctx.createLinearGradient(,,,);

            jb.addColorStop(,'red');

            jb.addColorStop(.,'green');

            jb.addColorStop(.,'orange');

            jb.addColorStop(,'blue');

        ctx.fillStyle = jb;

        ctx.fillRect(,,,);      //x起点, y起点, x终点， y终点

    }

</script>

</head>

<body>

    <canvas id="c" width="" height="" ></canvas>

</body>

</html>

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