Add Comet or Shooting Star Effect in Blogger

Blogging platform is very versatile in terms of different effects through using Javascript. Previously, we featured here the fireworks, star space  and the groovy effect and today we will share to you this shooting effect in Blogger.

 How to Add Shooting Star or Comet Effects in Blogger

Go to Blogger Dashboard
Click  Template >> Edit HTML
Look for the code below

</head>

Just above that code, paste the code below

<script type="text/javascript">
// <![CDATA[
var speed=25; // how fast - smaller is faster
var how_often=10; // average time between re-appearances of a comet (in seconds)
var how_many=10; // maximum number of comets in flight
var colours=new Array("#ff0", "#f93", "#f60", "#e93", "#e94", "#da5", "#da6", "#cb7", "#cb8", "#cc9", "#dcb", "#ddd");
// above line lists colours for the comet and its tail (can be as long or short as you like)

/****************************
* Shooting Star/Comet Effect*
*Bloggingtipsandtrix*
* DON'T EDIT BELOW THIS BOX *
****************************/

var dx=new Array();
var dy=new Array();
var xpos=new Array();
var ypos=new Array();
var comets=new Array();
var swide=800;
var shigh=600;
var tail=colours.length;
var boddie=false;

function addLoadEvent(funky) {
  var oldonload=window.onload;
  if (typeof(oldonload)!='function') window.onload=funky;
  else window.onload=function() {
    if (oldonload) oldonload();
    funky();
  }
}

addLoadEvent(whooosh);

function whooosh() { 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<how_many; i++) {
    write_comet(i*tail);
setTimeout('launch('+(i*tail)+')', Math.max(1000*i));
  }
}}

function write_comet(a) {
  var i, s;
  for (i=0; i<tail; i++) {
    s=2+(i<tail/4)+2*!i;
comets[i+a]=div(s, s);
comets[i+a].style.backgroundColor=colours[i];
boddie.appendChild(comets[i+a]);
  }
}

function div(w, h) {
  var d=document.createElement("div");
  d.style.position="absolute";
  d.style.overflow="hidden";
  d.style.width=w+"px";
  d.style.height=h+"px";
  return (d);
}

function stepthrough(a) {
  var i;
  if (Math.random()<0.008||ypos[a]+dy[a]<5||xpos[a]+dx[a]<5||xpos[a]+dx[a]>=swide-5||ypos[a]+dy[a]>=shigh-5) {
for (i=0; i<tail; i++) setTimeout('comets['+(i+a)+'].style.visibility="hidden"', speed*(tail-i));
setTimeout('launch('+a+')', Math.max(1000, 2000*Math.random()*how_often));
  }
  else setTimeout('stepthrough('+a+')', speed);
  for (i=tail-1; i>=0; i--) {
if (i) {
      xpos[i+a]=xpos[i+a-1];
      ypos[i+a]=ypos[i+a-1];
}
else {
 xpos[i+a]+=dx[a];
      ypos[i+a]+=dy[a];
}
    comets[i+a].style.left=xpos[i+a]+"px";
    comets[i+a].style.top=ypos[i+a]+"px";
  }
}

function launch(a) {
  var i;
  dx[a]=(Math.random()>0.5?1:-1)*(1+Math.random()*3);
  dy[a]=(Math.random()>0.5?1:-1)*((7-dx[a])/3+Math.random()*(dx[a]+5)/3);
  xpos[a]=2*tail*dx[a]+Math.round(Math.random()*(swide-4*tail*dx[a]));
  ypos[a]=2*tail*dy[a]+Math.round(Math.random()*(shigh-4*tail*dy[a]));
  for (i=0; i<tail; i++) {
    xpos[i+a]=xpos[a];
    ypos[i+a]=ypos[a];
comets[i+a].style.visibility="visible";
  }
  stepthrough(a);
}

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>

Save  your Template and Bravo!
From: mf2fm

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