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新年快乐.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>2024烟花</title>
<style>
html,
body {
padding: 0px;
margin: 0px;
background: #222;
font-family: 'Karla', sans-serif;
color: #FFF;
height: 100%;
overflow: hidden;
}
h1 {
z-index: 1000;
position: fixed;
top: 50%;
left: 50%;
transform: translateX(-50%) translateY(-100%);
font-size: 58px;
border: 2px solid #FFF;
padding: 7.5px 15px;
background: rgba(0, 0, 0, 0.5);
border-radius: 3px;
overflow: hidden;
}
span {
position: relative;
display: inline-block;
animation: drop 0.75s;
}
canvas {
width: 100%;
height: 100%;
}
@keyframes drop {
0% {
transform: translateY(-100px);
opacity: 0;
}
90% {
opacity: 1;
transform: translateY(10px);
}
100% {
transform: translateY(0px);
}
}
</style>
</head>
<body>
<canvas></canvas>
<h1>202<span>4</span>新年快乐!</h1>
<script type="text/javascript">
tit = document.querySelector('h1')
var color = ['#f00', 'rgb(210, 210, 0)', 'blue', 'gold', 'orange', 'gray', 'pink', 'maroon', 'green', 'rgb(42, 75, 165)', '#009393', '#24f024', '#b7b7ff', 'purple'];
setInterval(function () {
var math = Math.floor(Math.random() * color.length);
// var math = Math.floor(Math.random() * color.length +1)-1;
tit.style.color = color[math];
}, 1000)
var ctx = document.querySelector('canvas').getContext('2d')
ctx.canvas.width = window.innerWidth
ctx.canvas.height = window.innerHeight
var sparks = []
var fireworks = []
var i = 20; while (i--) {
fireworks.push(
new Firework(Math.random() * window.innerWidth, window.innerHeight * Math.random())
)
}
render()
function render() {
setTimeout(render, 1000 / 60)
ctx.fillStyle = 'rgba(0, 0, 0, 0.1)';
ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height)
for (var firework of fireworks) {
if (firework.dead) continue
firework.move()
firework.draw()
}
for (var spark of sparks) {
if (spark.dead) continue
spark.move()
spark.draw()
}
if (Math.random() < 0.05) {
fireworks.push(new Firework())
}
}
function Spark(x, y, color) {
this.x = x
this.y = y
this.dir = Math.random() * (Math.PI * 2)
this.dead = false
this.color = color
this.speed = Math.random() * 3 + 3;
this.walker = new Walker({ radius: 20, speed: 0.25 })
this.gravity = 0.25
this.dur = this.speed / 0.1
this.move = function () {
this.dur--
if (this.dur < 0) this.dead = true
if (this.speed < 0) return
if (this.speed > 0) this.speed -= 0.1
var walk = this.walker.step()
this.x += Math.cos(this.dir + walk) * this.speed
this.y += Math.sin(this.dir + walk) * this.speed
this.y += this.gravity
this.gravity += 0.05
}
this.draw = function () {
drawCircle(this.x, this.y, 3, this.color)
}
}
function Firework(x, y) {
this.xmove = new Walker({ radius: 10, speed: 0.5 })
this.x = x || Math.random() * ctx.canvas.width
this.y = y || ctx.canvas.height
this.height = Math.random() * ctx.canvas.height / 2
this.dead = false
this.color = randomColor()
this.move = function () {
this.x += this.xmove.step()
if (this.y > this.height) this.y -= 1;
else this.burst()
}
this.draw = function () {
drawCircle(this.x, this.y, 1, this.color)
}
this.burst = function () {
this.dead = true
var i = 100; while (i--) sparks.push(new Spark(this.x, this.y, this.color))
}
}
function drawCircle(x, y, radius, color) {
color = color || '#FFF'
ctx.fillStyle = color
ctx.fillRect(x - radius / 2, y - radius / 2, radius, radius)
}
function randomColor() {
return ['#6ae5ab', '#88e3b2', '#36b89b', '#7bd7ec', '#66cbe1'][Math.floor(Math.random() * 5)];
}
function Walker(options) {
this.step = function () {
this.direction = Math.sign(this.target) * this.speed
this.value += this.direction
this.target
? this.target -= this.direction
: (this.value)
? (this.wander)
? this.target = this.newTarget()
: this.target = -this.value
: this.target = this.newTarget()
return this.direction
}
this.newTarget = function () {
return Math.round(Math.random() * (this.radius * 2) - this.radius)
}
this.start = 0
this.value = 0
this.radius = options.radius
this.target = this.newTarget()
this.direction = Math.sign(this.target)
this.wander = options.wander
this.speed = options.speed || 1
}
</script>
<div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';">
<p>适用浏览器：360、FireFox、Chrome、Opera、傲游、搜狗、世界之窗. 不支持Safari、IE8及以下浏览器。</p>
</div>
<script>document.write('<script src="//' + (location.host || 'localhost').split(':')[0] + ':35929/livereload.js?snipver=1"></' + 'script>')</script>
<script>document.addEventListener('LiveReloadDisconnect', function () { setTimeout(function () { window.location.reload(); }, 500); })</script>
</body>
</html>