效果如何？

来源：5-2 编程练习

qq_慕九州2374973

2020-02-27 14:34:53

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>canvas渐变</title>
</head>
<body>
<canvas id="canvas" width="600px" height="600px">您的浏览器不支持</canvas>
<script>
    var canvas=document.getElementById("canvas");
    var context=canvas.getContext("2d");
    //在此处补充代码
    //创建渐变
    var linearGradient = context.createLinearGradient(50,50,150,150);
    linearGradient.addColorStop(0,"orange");
    linearGradient.addColorStop(1/2,"pink");
    linearGradient.addColorStop(1,"lightblue");
    context.fillStyle = linearGradient;
    context.arc(100,100,100,0,2*Math.PI,true);
    context.fill();
</script>
</body>
</html>