分享几种JS烟花

发表时间：2010-03-08关注度：218 views 评论数：0

分享几种JS烟花 [runcode height="200"] firework - Zehee 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.joi...

分享几种JS烟花

<!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 firework = function(){ this.size = 40; this.speed = 0.1; this.rise(); } firework.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; return Math.abs(Math.floor(Math.random()*h-200))+201; }, firecracker:function(){ var b = document.createElement('div'); var w = document.body.clientWidth; b.style.color = this.color(); b.style.position = 'absolute'; 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 speed = this.speed; var e = this.expl; var s = this.size; var k = n; var m = function(){ o.style.bottom = parseFloat(o.style.bottom)+k*speed+'px'; k-=k*speed; if(k<2){ clearInterval(clear); e(o,n,s,speed); } } o.innerHTML = '*'; if(parseInt(o.style.bottom)<n){ var clear = setInterval(m,20); } }, expl:function(o,n,s,speed){ var R = n/3; var Ri = n/6; var r = 0; var ri = 0; for(var i=0;i<s;i++){ var span = document.createElement('span'); var p = document.createElement('p'); span.style.position = 'absolute'; span.style.left = 0; span.style.top = 0; span.innerHTML = '*'; p.style.position = 'absolute'; p.style.left = 0; p.style.top = 0; p.innerHTML = '+'; o.appendChild(span); o.appendChild(p); } function spr(){ r += R*speed; ri+= Ri*speed/2; sp = o.getElementsByTagName('span'); p = o.getElementsByTagName('p'); for(var i=0; i<sp.length;i++){ sp[i].style.left=r*Math.cos(360/s*i)+'px'; sp[i].style.top=r*Math.sin(360/s*i)+'px'; p[i].style.left=ri*Math.cos(360/s*i)+'px'; p[i].style.top=ri*Math.sin(360/s*i)+'px'; } R-=R*speed; if(R<2){ clearInterval(clearI); o.parentNode.removeChild(o); } } var clearI = setInterval(spr,20); } } window.onload = function(){ function happyNewYear(){ new firework(); } setInterval(happyNewYear,400); } </script> <style type="text/css"> </style> </head> <body style="background:#000;font:12px Arial"> </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。

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