The example in this article describes the method of drawing gradient areas with JavaScript+html5 canvas. Share it with everyone for your reference, the details are as follows:
The screenshot of the running effect is as follows:
The specific code is as follows:
<!DOCTYPE html>
<html>
<head>
<title>demo</title>
<style type="text/css">
#canvas {
border:3px solid gray;
}
</style>
</head>
<body>
<canvas id="canvas" width="500px" height="500px"></canvas>
</body>
<script type="text/javascript">
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.rect(0, 0, 200, 200);
ctx.closePath();
var gradient = ctx.createLinearGradient(0, 0, 200, 200);
gradient.addColorStop(0, "gray");
gradient.addColorStop(0.5, "red");
gradient.addColorStop(1, "blue");
ctx.fillStyle = gradient;
ctx.fill();
</script>
</html>
Readers who are interested in more content related to js special effects can check out the special topics of this site: "Summary of jQuery animation and special effects usage" and "Summary of common classic special effects of jQuery"
I hope this article will be helpful to everyone in JavaScript programming.
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