<!-- saved from url=http://keyup.cn -->
<html>
<head><meta http-equiv="Content-Type" content="text/html charset=UTF-8">
<meta content="width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no" name="viewport">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<title>烟花</title>
<style type="text/css">
html,body{height:100%margin:0padding:0}
ul,li{text-indent:0text-decoration:nonemargin:0padding:0}
img{border:0}
body{background-color:#000color:#999font:100%/18px helvetica, arial, sans-serif}
canvas{cursor:crosshairdisplay:blockleft:0position:absolutetop:0z-index:20}
#header img{width:100% height:20%}
#bg img{width:100% height:80%}
#header,#bg{position:fixedleft:0right:0z-index:10}
#header{top:0}
#bg{position:fixedz-index:1}
audio{position:fixeddisplay:nonebottom:0left:0right:0width:100%z-index:5}
</style>
<link rel="shortcut icon" type="image/x-icon" href="">
<style type="text/css"></style><style id="style-1-cropbar-clipper">
.en-markup-crop-options {
top: 18px !important
left: 50% !important
margin-left: -100px !important
width: 200px !important
border: 2px rgba(255,255,255,.38) solid !important
border-radius: 4px !important
}
.en-markup-crop-options div div:first-of-type {
margin-left: 0px !important
}
#.bg {
background-color: black
}
</style>
</head>
<body>
<div id="bg"></div>
<script src="http://www.jq22.com/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(function(){
var Fireworks = function(){
var self = this
var rand = function(rMi, rMa){return ~~((Math.random()*(rMa-rMi+1))+rMi)}
var hitTest = function(x1, y1, w1, h1, x2, y2, w2, h2){return !(x1 + w1 < x2 || x2 + w2 < x1 || y1 + h1 < y2 || y2 + h2 < y1)}
window.requestAnimFrame=function(){return window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(a){window.setTimeout(a,1E3/60)}}()
self.init = function(){
self.canvas = document.createElement('canvas')
self.canvas.width = self.cw = $(window).innerWidth()
self.canvas.height = self.ch = $(window).innerHeight()
self.particles = []
self.partCount = 150
self.fireworks = []
self.mx = self.cw/2
self.my = self.ch/2
self.currentHue = 30
self.partSpeed = 5
self.partSpeedVariance = 10
self.partWind = 50
self.partFriction = 5
self.partGravity = 1
self.hueMin = 0
self.hueMax = 360
self.fworkSpeed = 4
self.fworkAccel = 10
self.hueVariance = 30
self.flickerDensity = 25
self.showShockwave = true
self.showTarget = false
self.clearAlpha = 25
$(document.body).append(self.canvas)
self.ctx = self.canvas.getContext('2d')
self.ctx.lineCap = 'round'
self.ctx.lineJoin = 'round'
self.lineWidth = 1
self.bindEvents()
self.canvasLoop()
self.canvas.onselectstart = function() {
return false
}
}
self.createParticles = function(x,y, hue){
var countdown = self.partCount
while(countdown--){
var newParticle = {
x: x,
y: y,
coordLast: [
{x: x, y: y},
{x: x, y: y},
{x: x, y: y}
],
angle: rand(0, 360),
speed: rand(((self.partSpeed - self.partSpeedVariance) <= 0) ? 1 : self.partSpeed - self.partSpeedVariance, (self.partSpeed + self.partSpeedVariance)),
friction: 1 - self.partFriction/100,
gravity: self.partGravity/2,
hue: rand(hue-self.hueVariance, hue+self.hueVariance),
brightness: rand(50, 80),
alpha: rand(40,100)/100,
decay: rand(10, 50)/1000,
wind: (rand(0, self.partWind) - (self.partWind/2))/25,
lineWidth: self.lineWidth
}
self.particles.push(newParticle)
}
}
self.updateParticles = function(){
var i = self.particles.length
while(i--){
var p = self.particles[i]
var radians = p.angle * Math.PI / 180
var vx = Math.cos(radians) * p.speed
var vy = Math.sin(radians) * p.speed
p.speed *= p.friction
p.coordLast[2].x = p.coordLast[1].x
p.coordLast[2].y = p.coordLast[1].y
p.coordLast[1].x = p.coordLast[0].x
p.coordLast[1].y = p.coordLast[0].y
p.coordLast[0].x = p.x
p.coordLast[0].y = p.y
p.x += vx
p.y += vy
p.y += p.gravity
p.angle += p.wind
p.alpha -= p.decay
if(!hitTest(0,0,self.cw,self.ch,p.x-p.radius, p.y-p.radius, p.radius*2, p.radius*2) || p.alpha < .05){
self.particles.splice(i, 1)
}
}
}
self.drawParticles = function(){
var i = self.particles.length
while(i--){
var p = self.particles[i]
var coordRand = (rand(1,3)-1)
self.ctx.beginPath()
self.ctx.moveTo(Math.round(p.coordLast[coordRand].x), Math.round(p.coordLast[coordRand].y))
self.ctx.lineTo(Math.round(p.x), Math.round(p.y))
self.ctx.closePath()
self.ctx.strokeStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+p.alpha+')'
self.ctx.stroke()
if(self.flickerDensity > 0){
var inverseDensity = 50 - self.flickerDensity
if(rand(0, inverseDensity) === inverseDensity){
self.ctx.beginPath()
self.ctx.arc(Math.round(p.x), Math.round(p.y), rand(p.lineWidth,p.lineWidth+3)/2, 0, Math.PI*2, false)
self.ctx.closePath()
var randAlpha = rand(50,100)/100
self.ctx.fillStyle = 'hsla('+p.hue+', 100%, '+p.brightness+'%, '+randAlpha+')'
self.ctx.fill()
}
}
}
}
self.createFireworks = function(startX, startY, targetX, targetY){
var newFirework = {
x: startX,
y: startY,
startX: startX,
startY: startY,
hitX: false,
hitY: false,
coordLast: [
{x: startX, y: startY},
{x: startX, y: startY},
{x: startX, y: startY}
],
targetX: targetX,
targetY: targetY,
speed: self.fworkSpeed,
angle: Math.atan2(targetY - startY, targetX - startX),
shockwaveAngle: Math.atan2(targetY - startY, targetX - startX)+(90*(Math.PI/180)),
acceleration: self.fworkAccel/100,
hue: self.currentHue,
brightness: rand(50, 80),
alpha: rand(50,100)/100,
lineWidth: self.lineWidth
}
self.fireworks.push(newFirework)
}
self.updateFireworks = function(){
var i = self.fireworks.length
while(i--){
var f = self.fireworks[i]
self.ctx.lineWidth = f.lineWidth
vx = Math.cos(f.angle) * f.speed,
vy = Math.sin(f.angle) * f.speed
f.speed *= 1 + f.acceleration
f.coordLast[2].x = f.coordLast[1].x
f.coordLast[2].y = f.coordLast[1].y
f.coordLast[1].x = f.coordLast[0].x
f.coordLast[1].y = f.coordLast[0].y
f.coordLast[0].x = f.x
f.coordLast[0].y = f.y
if(f.startX >= f.targetX){
if(f.x + vx <= f.targetX){
f.x = f.targetX
f.hitX = true
} else {
f.x += vx
}
} else {
if(f.x + vx >= f.targetX){
f.x = f.targetX
f.hitX = true
} else {
f.x += vx
}
}
if(f.startY >= f.targetY){
if(f.y + vy <= f.targetY){
f.y = f.targetY
f.hitY = true
} else {
f.y += vy
}
} else {
if(f.y + vy >= f.targetY){
f.y = f.targetY
f.hitY = true
} else {
f.y += vy
}
}
if(f.hitX && f.hitY){
self.createParticles(f.targetX, f.targetY, f.hue)
self.fireworks.splice(i, 1)
}
}
}
self.drawFireworks = function(){
var i = self.fireworks.length
self.ctx.globalCompositeOperation = 'lighter'
while(i--){
var f = self.fireworks[i]
self.ctx.lineWidth = f.lineWidth
var coordRand = (rand(1,3)-1)
self.ctx.beginPath()
self.ctx.moveTo(Math.round(f.coordLast[coordRand].x), Math.round(f.coordLast[coordRand].y))
self.ctx.lineTo(Math.round(f.x), Math.round(f.y))
self.ctx.closePath()
self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+f.alpha+')'
self.ctx.stroke()
if(self.showTarget){
self.ctx.save()
self.ctx.beginPath()
self.ctx.arc(Math.round(f.targetX), Math.round(f.targetY), rand(1,8), 0, Math.PI*2, false)
self.ctx.closePath()
self.ctx.lineWidth = 1
self.ctx.stroke()
self.ctx.restore()
}
if(self.showShockwave){
self.ctx.save()
self.ctx.translate(Math.round(f.x), Math.round(f.y))
self.ctx.rotate(f.shockwaveAngle)
self.ctx.beginPath()
self.ctx.arc(0, 0, 1*(f.speed/5), 0, Math.PI, true)
self.ctx.strokeStyle = 'hsla('+f.hue+', 100%, '+f.brightness+'%, '+rand(25, 60)/100+')'
self.ctx.lineWidth = f.lineWidth
self.ctx.stroke()
self.ctx.restore()
}
}
}
self.bindEvents = function(){
$(window).on('resize', function(){
clearTimeout(self.timeout)
self.timeout = setTimeout(function() {
self.canvas.width = self.cw = $(window).innerWidth()
self.canvas.height = self.ch = $(window).innerHeight()
self.ctx.lineCap = 'round'
self.ctx.lineJoin = 'round'
}, 100)
})
$(self.canvas).on('mousedown', function(e){
self.mx = e.pageX - self.canvas.offsetLeft
self.my = e.pageY - self.canvas.offsetTop
self.currentHue = rand(self.hueMin, self.hueMax)
self.createFireworks(self.cw/2, self.ch, self.mx, self.my)
$(self.canvas).on('mousemove.fireworks', function(e){
self.mx = e.pageX - self.canvas.offsetLeft
self.my = e.pageY - self.canvas.offsetTop
self.currentHue = rand(self.hueMin, self.hueMax)
self.createFireworks(self.cw/2, self.ch, self.mx, self.my)
})
})
$(self.canvas).on('mouseup', function(e){
$(self.canvas).off('mousemove.fireworks')
})
}
self.clear = function(){
self.particles = []
self.fireworks = []
self.ctx.clearRect(0, 0, self.cw, self.ch)
}
self.canvasLoop = function(){
requestAnimFrame(self.canvasLoop, self.canvas)
self.ctx.globalCompositeOperation = 'destination-out'
self.ctx.fillStyle = 'rgba(0,0,0,'+self.clearAlpha/100+')'
self.ctx.fillRect(0,0,self.cw,self.ch)
self.updateFireworks()
self.updateParticles()
self.drawFireworks()
self.drawParticles()
}
self.init()
}
var fworks = new Fireworks()
})
</script>
<script type="text/javascript">
$(document).ready(function() {
setTimeout(function() {
$("#header").hide("slow")
},2000)
})
</script>
</body>
</html>
烟花链接代码的操作步骤如下：
操作环境：华硕飞行堡垒、windows10家庭版、DreamweaverCS6。
1、打开Dreamweaver，新建HTML。
2、创建一个div标签，书写属性。
3、在＜body＞辩余内添加罩灶运js代码。
4、在＜script＞内添加js内容。
什么是电子烟花？
电子烟花是一种新型的电子产品，它有别于传统的装药烟花：
1·电子烟花是利用喷向空中的彩色纸屑反射彩色灯光结合哨子发出的啸叫声来产生火药烟花的燃放效果，可重复使用，没有硝烟，不产生垃圾，同样绚丽多姿；
2·利用电子激发普通空气爆炸，不使用火药和任何爆炸、燃烧药剂，也不使用任何燃烧助燃气体，在爆炸闪光过程中不产生烟雾，在爆炸、闪光过程中不伤人、不起火，并且能释放大量的负离子清洁空气；
3·电子烟花室内外都能用，有手持式、坐地式和多管式，均可同时使用。
你把CSS中的这两行的background改下body{overflow:hiddenbackground:red}
html{overflow:hiddenbackground:red}
