js实现canvas星空闪耀背景动画效果代码-html代码-BFW代码库

js实现canvas星空闪耀背景动画效果代码

代码语言：html

所属分类：背景

代码描述：js实现canvas星空闪耀背景动画效果代码

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>
<head>
<meta charset="utf-8">

<style>
body {
  background: #060e1b;
  overflow: hidden;
}

canvas {
  //opacity: 0.5;
}

/* Demo Buttons Style */
.codrops-demos {
	font-size: 0.8em;
	text-align:center;
	position:absolute;
	z-index:99;
	width:96%;
}

.codrops-demos a {
	display: inline-block;
	margin: 0.35em 0.1em;
	padding: 0.5em 1.2em;
	outline: none;
	text-decoration: none;
	text-transform: uppercase;
	letter-spacing: 1px;
	font-weight: 700;
	border-radius: 2px;
	font-size: 110%;
	border: 2px solid transparent;
	color:#fff;
}

.codrops-demos a:hover,
.codrops-demos a.current-demo {
	border-color: #383a3c;
}
</style>
</head>

<body>

<canvas id="canvas"></canvas>
<script>
"use strict";

var canvas = document.getElementById('canvas'),
  ctx = canvas.getContext('2d'),
  w = canvas.width = window.innerWidth,
  h = canvas.height = window.innerHeight,

  hue = 217,
  stars = [],
  count = 0,
  maxStars = 1200;

var canvas2 = document.createElement('canvas'),
  ctx2 = canvas2.getContext('2d');
canvas2.width = 100;
canvas2.height = 100;
var half = canvas2.width / 2,
  gradient2 = ctx2.createRadialGradient(half, half, 0, half, half, half);
gradient2.addColorStop(0.025, '#fff');
gradient2.addColorStop(0.1, 'hsl(' + hue + ', 61%, 33%)');
gradient2.addColorStop(0.25, 'hsl(' + hue + ', 64%, 6%)');
gradient2.addColorStop(1, 'transparent');

ctx2.fillStyle = gradient2;
ctx2.beginPath();
ctx2.arc(half, half, half, 0, Math.PI * 2);
ctx2.fill();

// End cache

function random(m.........完整代码请登录后点击上方下载按钮下载查看