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Code JavaScript Pháo Hoa:

<script type='text/javascript'>
var bits=150; // how many bits
var speed=15; // how fast - smaller is faster
var bangs=10; // how many can be launched simultaneously (note that using too many can slow the script down)
var colours=new Array("#03f", "#f03", "#0e0", "#93f", "#0cf", "#f93", "#f0c");
//                     blue    red     green   purple  cyan    orange  pink

var bangheight=new Array();
var intensity=new Array();
var colour=new Array();
var Xpos=new Array();
var Ypos=new Array();
var dX=new Array();
var dY=new Array();
var stars=new Array();
var decay=new Array();
var swide=800;
var shigh=600;
var boddie;
window.onload=function() { if (document.getElementById) {
  var i;
  boddie=document.createElement("div");
  boddie.style.position="fixed";
  boddie.style.top="0px";
  boddie.style.left="0px";
  boddie.style.overflow="visible";
  boddie.style.width="1px";
  boddie.style.height="1px";
  boddie.style.backgroundColor="transparent";
  document.body.appendChild(boddie);
  set_width();
  for (i=0; i<bangs; i++) {
    write_fire(i);
    launch(i);
    setInterval('stepthrough('+i+')', speed);
  }
}}
function write_fire(N) {
  var i, rlef, rdow;
  stars[N+'r']=createDiv('|', 12);
  boddie.appendChild(stars[N+'r']);
  for (i=bits*N; i<bits+bits*N; i++) {
    stars[i]=createDiv('*', 13);
    boddie.appendChild(stars[i]);
  }
}
function createDiv(char, size) {
  var div=document.createElement("div");
  div.style.font=size+"px monospace";
  div.style.position="absolute";
  div.style.backgroundColor="transparent";
  div.appendChild(document.createTextNode(char));
  return (div);
}
function launch(N) {
  colour[N]=Math.floor(Math.random()*colours.length);
  Xpos[N+"r"]=swide*0.5;
  Ypos[N+"r"]=shigh-5;
  bangheight[N]=Math.round((0.5+Math.random())*shigh*0.4);
  dX[N+"r"]=(Math.random()-0.5)*swide/bangheight[N];
  if (dX[N+"r"]>1.25) stars[N+"r"].firstChild.nodeValue="/";
  else if (dX[N+"r"]<-1.25) stars[N+"r"].firstChild.nodeValue="\";
  else stars[N+"r"].firstChild.nodeValue="|";
  stars[N+"r"].style.color=colours[colour[N]];
}
function bang(N) {
  var i, Z, A=0;
  for (i=bits*N; i<bits+bits*N; i++) {
    Z=stars[i].style;
    Z.left=Xpos[i]+"px";
    Z.top=Ypos[i]+"px";
    if (decay[i]) decay[i]--;
    else A++;
    if (decay[i]==15) Z.fontSize="7px";
    else if (decay[i]==7) Z.fontSize="2px";
    else if (decay[i]==1) Z.visibility="hidden";
    Xpos[i]+=dX[i];
    Ypos[i]+=(dY[i]+=1.25/intensity[N]);
  }
  if (A!=bits) setTimeout("bang("+N+")", speed);
}
function stepthrough(N) {
  var i, M, Z;
  var oldx=Xpos[N+"r"];
  var oldy=Ypos[N+"r"];
  Xpos[N+"r"]+=dX[N+"r"];
  Ypos[N+"r"]-=4;
  if (Ypos[N+"r"]<bangheight[N]) {
    M=Math.floor(Math.random()*3*colours.length);
    intensity[N]=5+Math.random()*4;
    for (i=N*bits; i<bits+bits*N; i++) {
      Xpos[i]=Xpos[N+"r"];
      Ypos[i]=Ypos[N+"r"];
      dY[i]=(Math.random()-0.5)*intensity[N];
      dX[i]=(Math.random()-0.5)*(intensity[N]-Math.abs(dY[i]))*1.25;
      decay[i]=16+Math.floor(Math.random()*16);
      Z=stars[i];
      if (M<colours.length) Z.style.color=colours[i%2?colour[N]:M];
      else if (M<2*colours.length) Z.style.color=colours[colour[N]];
      else Z.style.color=colours[i%colours.length];
      Z.style.fontSize="13px";
      Z.style.visibility="visible";
    }
    bang(N);
    launch(N);
  }
  stars[N+"r"].style.left=oldx+"px";
  stars[N+"r"].style.top=oldy+"px";
}
window.onresize=set_width;
function set_width() {
  var sw_min=999999;
  var sh_min=999999;
  if (document.documentElement && document.documentElement.clientWidth) {
    if (document.documentElement.clientWidth>0) sw_min=document.documentElement.clientWidth;
    if (document.documentElement.clientHeight>0) sh_min=document.documentElement.clientHeight;
  }
  if (typeof(self.innerWidth)!="undefined" && self.innerWidth) {
    if (self.innerWidth>0 && self.innerWidth<sw_min) sw_min=self.innerWidth;
    if (self.innerHeight>0 && self.innerHeight<sh_min) sh_min=self.innerHeight;
  }
  if (document.body.clientWidth) {
    if (document.body.clientWidth>0 && document.body.clientWidth<sw_min) sw_min=document.body.clientWidth;
    if (document.body.clientHeight>0 && document.body.clientHeight<sh_min) sh_min=document.body.clientHeight;
  }
  if (sw_min==999999 || sh_min==999999) {
    sw_min=800;
    sh_min=600;
  }
  swide=sw_min;
  shigh=sh_min;
}
</script>

Các bạn copy code rồi dán vào wap, demo wap mình không dùng được, chả biết tại sao nữa, các bạn thử copy rồi tự dán vào wap và test nhé :P

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