分享几种JS烟花
今天看到蓝色理想有几个哥们都发了自己写的烟花效果，弄的心里痒痒，自己也想写一个出来玩，结果把IE写死好几次，还是放弃了，这里转几个别人写的效果上来分享
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>firework - Zehee</title>
<script type="text/javascript">
var fireworks = function(){
this.size = 20;
this.rise();
}
fireworks.prototype = {
color:function(){
var c = ['0','3','6','9','c','f'];
var t = [c[Math.floor(Math.random()*100)%6],'0','f'];
t.sort(function(){return Math.random()>0.5?-1:1;});
return '#'+t.join('');
},
aheight:function(){
var h = document.documentElement.clientHeight-250;
return Math.abs(Math.floor(Math.random()*h-200))+201;
},
firecracker:function(){
var b = document.createElement('div');
var w = document.documentElement.clientWidth;
b.style.position = 'absolute';
b.style.color = this.color();
b.style.bottom = 0;
b.style.left = Math.floor(Math.random()*w)+1+'px';
document.body.appendChild(b);
return b;
},
rise:function(){
var o = this.firecracker();
var n = this.aheight();
var c = this.color;
var e = this.expl;
var s = this.size;
var k = n;
var m = function(){
o.style.bottom = parseFloat(o.style.bottom)+k*0.1+'px';
k-=k*0.1;
if(k<2){
clearInterval(clear);
e(o,n,s,c);
}
}
o.innerHTML = '.';
if(parseInt(o.style.bottom)<n){
var clear = setInterval(m,20);
}
},
expl:function(o,n,s,c){
var R=n/3,Ri=n/6,Rii=n/9;
var r=0,ri=0,rii=0;
for(var i=0;i<s;i++){
var span = document.createElement('span');
var p = document.createElement('i');
var a = document.createElement('a');
span.style.position = 'absolute';
span.style.fontSize = n/10+'px';
span.style.left = 0;
span.style.top = 0;
span.innerHTML = '*';
p.style.position = 'absolute';
p.style.left = 0;
p.style.top = 0;
p.innerHTML = '*';
a.style.position = 'absolute';
a.style.left = 0;
a.style.top = 0;
a.innerHTML = '*';
o.appendChild(span);
o.appendChild(p);
o.appendChild(a);
}
function spr(){
r += R*0.1;
ri+= Ri*0.06;
rii+= Rii*0.06;
sp = o.getElementsByTagName('span');
p = o.getElementsByTagName('i');
a = o.getElementsByTagName('a');
for(var i=0; i<sp.length;i++){
sp[i].style.color = c();
p[i].style.color = c();
a[i].style.color = c();
sp[i].style.left=r*Math.cos(360/s*i)+'px';
sp[i].style.top=r*Math.sin(360/s*i)+'px';
sp[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
p[i].style.left=ri*Math.cos(360/s*i)+'px';
p[i].style.top=ri*Math.sin(360/s*i)+'px';
p[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
a[i].style.left=rii*Math.cos(360/s*i)+'px';
a[i].style.top=rii*Math.sin(360/s*i)+'px';
a[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
}
R-=R*0.1;
if(R<2){
o.innerHTML = '';
o.parentNode.removeChild(o);
clearInterval(clearI);
}
}
var clearI = setInterval(spr,20);
}
}
window.onload = function(){
function happyNewYear(){
new fireworks();
}
setInterval(happyNewYear,1000);
}
</script>
<style type="text/css">
</style>
</head>
<body style="background:#000;font:12px Georgia, 'Times New Roman', Times, serif">
</body>
</html>
提示：你可以先修改部分代码再运行。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>firework - Zehee</title>
<script type="text/javascript">
var fireworks = function(){
this.size = 20;
this.rise();
}
fireworks.prototype = {
color:function(){
var c = ['0','3','6','9','c','f'];
var t = [c[Math.floor(Math.random()*100)%6],'0','f'];
t.sort(function(){return Math.random()>0.5?-1:1;});
return '#'+t.join('');
},
aheight:function(){
var h = document.documentElement.clientHeight-250;
return Math.abs(Math.floor(Math.random()*h-200))+201;
},
firecracker:function(){
var b = document.createElement('div');
var w = document.documentElement.clientWidth;
b.style.position = 'absolute';
b.style.color = this.color();
b.style.bottom = 0;
b.style.left = Math.floor(Math.random()*w)+1+'px';
document.body.appendChild(b);
return b;
},
rise:function(){
var o = this.firecracker();
var n = this.aheight();
var c = this.color;
var e = this.expl;
var s = this.size;
var k = n;
var m = function(){
o.style.bottom = parseFloat(o.style.bottom)+k*0.1+'px';
k-=k*0.1;
if(k<2){
clearInterval(clear);
e(o,n,s,c);
}
}
o.innerHTML = '.';
if(parseInt(o.style.bottom)<n){
var clear = setInterval(m,20);
}
},
expl:function(o,n,s,c){
var R=n/3,Ri=n/6,Rii=n/9;
var r=0,ri=0,rii=0;
for(var i=0;i<s;i++){
var span = document.createElement('span');
var p = document.createElement('i');
var a = document.createElement('a');
span.style.position = 'absolute';
span.style.fontSize = n/10+'px';
span.style.left = 0;
span.style.top = 0;
span.innerHTML = '*';
p.style.position = 'absolute';
p.style.left = 0;
p.style.top = 0;
p.innerHTML = '*';
a.style.position = 'absolute';
a.style.left = 0;
a.style.top = 0;
a.innerHTML = '*';
o.appendChild(span);
o.appendChild(p);
o.appendChild(a);
}
function spr(){
r += R*0.1;
ri+= Ri*0.06;
rii+= Rii*0.06;
sp = o.getElementsByTagName('span');
p = o.getElementsByTagName('i');
a = o.getElementsByTagName('a');
for(var i=0; i<sp.length;i++){
sp[i].style.color = c();
p[i].style.color = c();
a[i].style.color = c();
sp[i].style.left=r*Math.cos(360/s*i)+'px';
sp[i].style.top=r*Math.sin(360/s*i)+'px';
sp[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
p[i].style.left=ri*Math.cos(360/s*i)+'px';
p[i].style.top=ri*Math.sin(360/s*i)+'px';
p[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
a[i].style.left=rii*Math.cos(360/s*i)+'px';
a[i].style.top=rii*Math.sin(360/s*i)+'px';
a[i].style.fontSize=parseFloat(sp[i].style.fontSize)*0.96+'px';
}
R-=R*0.1;
if(R<2){
o.innerHTML = '';
o.parentNode.removeChild(o);
clearInterval(clearI);
}
}
var clearI = setInterval(spr,20);
}
}
window.onload = function(){
function happyNewYear(){
new fireworks();
}
setInterval(happyNewYear,1000);
}
</script>
<style type="text/css">
</style>
</head>
<body style="background:#000;font:12px Georgia, 'Times New Roman', Times, serif">
</body>
</html>
提示：你可以先修改部分代码再运行。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Untitled Page</title>
</head>
<style type="text/css">
.fire{display:block; overflow:hidden; font-size:12px; position:absolute};
body{overflow:hidden; background:#000}
html{overflow:hidden; background:#000}
</style>
<body>
</body>
<script type="text/javascript">
var Fire = function(r, color) {
this.radius = r || 12;
this.color = color || "FF6600";
this.xpos = 0;
this.ypos = 0;
this.zpos = 0;
this.vx = 0;
this.vy = 0;
this.vz = 0;
this.mass = 1;
this.p = document.createElement("span");
this.p.className = "fire";
this.p.innerHTML = "*";
this.p.style.fontSize = this.radius + "px";
this.p.style.color = "#" + this.color;
}
Fire.prototype = {
append: function(parent) {
parent.appendChild(this.p);
},
setSize: function(scale) {
this.p.style.fontSize = this.radius * scale + "px";
},
setPosition:function(x, y) {
this.p.style.left = x + "px";
this.p.style.top = y + "px";
},
setVisible: function(b) {
this.p.style.display = b ? "block" : "none";
}
}
var fireworks = function() {
var fires = new Array();
var count = 100;
var fl = 250;
var vpx = 500;
var vpy = 300;
var gravity = .3;
var floor = 200;
var bounce = -.8;
var timer;
return {
init: function() {
for (var i=0; i<count; i++) {
var color = 0xFF0000;
color = (Math.random() * 0xFFFFFF).toString(16).toString().split(".")[0];
while(color.length < 6) {
color = "0" + color;
}
var fire = new Fire(12, color);
fires.push(fire);
fire.ypos = -100;
fire.vx = Math.random() * 6 - 3;
fire.vy = Math.random() * 6 - 3;
fire.vz = Math.random() * 6 - 3;
fire.append(document.body);
}
var that = this;
timer = setInterval(function() {
for (var i=0;i<count; i++) {
that.move(fires[i]);
}
}, 30);
},
move: function(fire) {
fire.vy += gravity;
fire.xpos += fire.vx;
fire.ypos += fire.vy;
fire.zpos += fire.vz;
if (fire.ypos > floor) {
fire.ypos = floor;
fire.vy *= bounce;
}
if (fire.zpos > -fl) {
var scale = fl/ (fl+fire.zpos);
fire.setSize(scale);
fire.setPosition(vpx + fire.xpos * scale,
vpy + fire.ypos * scale);
fire.setVisible(true);
} else {
fire.setVisible(false);
}
}
}
}
fireworks().init();
</script>
</html>
提示：你可以先修改部分代码再运行。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Untitled Page</title>
</head>
<style type="text/css">
.fire{display:block; overflow:hidden; font-size:12px; position:absolute};
body{overflow:hidden; background:#000}
html{overflow:hidden; background:#000}
</style>
<body>
</body>
<script type="text/javascript">
var Fire = function(r, color) {
this.radius = r || 12;
this.color = color;
this.xpos = 0;
this.ypos = 0;
this.zpos = 0;
this.vx = 0;
this.vy = 0;
this.vz = 0;
this.mass = 1;
this.x =0;
this.y=0;
this.p = document.createElement("span");
this.p.className = "fire";
this.p.innerHTML = "*";
this.p.style.fontSize = this.radius + "px";
this.p.style.color = "#" + this.color;
}
Fire.prototype = {
append: function(parent) {
parent.appendChild(this.p);
},
setSize: function(scale) {
this.p.style.fontSize = this.radius * scale + "px";
},
setPosition:function(x, y) {
this.p.style.left = x + "px";
this.p.style.top = y + "px";
},
setVisible: function(b) {
this.p.style.display = b ? "block" : "none";
}
}
var fireworks = function() {
var fires = new Array();
var count = 150;
var fl = 250;
var vpx = 500;
var vpy = 300;
var gravity = .5;
var floor = 200;
var bounce = -.8;
var timer;
var wind = ((Math.floor(Math.random()*3) + 3)/10)*(Math.random()*2 - 1 > 0 ? 1 : -1)*.25;
var wpos = 0;
var wcount;
return {
init: function() {
wcount = 50 + Math.floor(Math.random() * 100);
for (var i=0; i<count; i++) {
var color = 0xFF0000;
color = (Math.random() * 0xFFFFFF).toString(16).toString().split(".")[0];
while(color.length < 6) {
color = "0" + color;
}
var fire = new Fire(12, color);
fires.push(fire);
fire.ypos = -100;
fire.vz = Math.random() * 6 - 3;
fire.vx = (Math.random()*2 - 1)*2 ;
fire.vy = Math.random()*-15 - 15;
fire.x = 500
fire.y = 600;
fire.append(document.body);
}
var that = this;
timer = setInterval(function() {
wpos++;
if (wpos >= wcount) {
wpos = 0;
wcount = 50 + Math.floor(Math.random() * 100);
wind = ((Math.floor(Math.random()*3) + 3)/10)*(Math.random()*2 - 1 > 0 ? 1 : -1)*.25;
}
for (var i=0;i<count; i++) {
that.move(fires[i]);
}
}, 30);
},
move: function(fire) {
fire.vy += gravity;
fire.x += fire.vx;
fire.y += fire.vy;
fire.vx += wind;
fire.setPosition(fire.x, fire.y);
if (fire.x < 0 || fire.x >1000 || fire.y < 0 || fire.y > 600) {
fire.vx = (Math.random()*2 - 1)*2;
fire.vy = Math.random()*-15 - 15;
fire.x = 500;
fire.y = 600;
fire.setPosition(fire.x, fire.y);
}
}
}
}
fireworks().init();
</script>
</html>
提示：你可以先修改部分代码再运行。
腾讯云开发者
