js canvas烟花动画效果代码-html代码-BFW代码库

js canvas烟花动画效果代码

代码语言：html

所属分类：动画

代码描述：js canvas烟花动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html dir="ltr" lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />

<style>
/* basic styles for black background and crosshair cursor */
body {
	background: #000;
	margin: 0;
}

canvas {
	cursor: crosshair;
	display: block;
}
</style>
</head>

<canvas id="canvas">Canvas is not supported in your browser.</canvas>
<script>
// when animating on canvas, it is best to use requestAnimationFrame instead of setTimeout or setInterval
// not supported in all browsers though and sometimes needs a prefix, so we need a shim
window.requestAnimFrame = ( function() {
	return window.requestAnimationFrame ||
				window.webkitRequestAnimationFrame ||
				window.mozRequestAnimationFrame ||
				function( callback ) {
					window.setTimeout( callback, 1000 / 60 );
				};
})();

// now we will setup our basic variables for the demo
var canvas = document.getElementById( 'canvas' ),
		ctx = canvas.getContext( '2d' ),
		// full screen dimensions
		cw = window.innerWidth,
		ch = window.innerHeight,
		// firework collection
		fireworks = [],
		// particle collection
		particles = [],
		// starting hue
		hue = 120,
		// when launching fireworks with a click, too many get launched at once without a limiter, one launch per 5 loop ticks
		limiterTotal = 5,
		limiterTick = 0,
		// this will time the auto launches of fireworks, one launch per 80 loop ticks
		timerTotal = 80,
		timerTick = 0,
		mousedown = false,
		/.........完整代码请登录后点击上方下载按钮下载查看