<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<style>
canvas {
border: 1px solid hotpink;
}
.linearGradient {
width: 500px;
height: 100px;
background-image: linear-gradient(to right,green,blue);
}
</style>
</head>
<body>
<div class="linearGradient"></div>
<canvas width="600px" height="400px"></canvas>
<script>
var myCanvas=document.querySelector('canvas');
var ctx=myCanvas.getContext('2d');
//ctx.fillStyle='pink';
//创建一个渐变方案
var linearGradient=ctx.createLinearGradient(100,100,200,100);
linearGradient.addColorStop(0,'pink');
linearGradient.addColorStop(0.5,'grey');
linearGradient.addColorStop(1,'green');
ctx.fillStyle=linearGradient;
ctx.fillRect(100,100,200,100);
</script>
</body>
</html>
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