Disco Background Effect - JavaScript Made Easy: Free JavaScripts Tutorials Example Code

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Disco Background Effect		[View Sample]

Get into the groove with this disco background effect. This JavaScript fades the background color continuously using a variety of colors, turn your website into the dance floor!


Insert into <HEAD>
<script language="JavaScript"> <!-- //you can assign the initial color of the background here r=255; g=255; b=255; flag=0; t=new Array; o=new Array; d=new Array; function hex(a,c) { t[a]=Math.floor(c/16) o[a]=c%16 switch (t[a]) { case 10: t[a]='A'; break; case 11: t[a]='B'; break; case 12: t[a]='C'; break; case 13: t[a]='D'; break; case 14: t[a]='E'; break; case 15: t[a]='F'; break; default: break; } switch (o[a]) { case 10: o[a]='A'; break; case 11: o[a]='B'; break; case 12: o[a]='C'; break; case 13: o[a]='D'; break; case 14: o[a]='E'; break; case 15: o[a]='F'; break; default: break; } } function ran(a,c) { if ((Math.random()>2/3\|\|c==0)&&c<255) { c++ d[a]=2; } else { if ((Math.random()<=1/2\|\|c==255)&&c>0) { c-- d[a]=1; } else d[a]=0; } return c } function do_it(a,c) { if ((d[a]==2&&c<255)\|\|c==0) { c++ d[a]=2 } else if ((d[a]==1&&c>0)\|\|c==255) { c--; d[a]=1; } if (a==3) { if (d[1]==0&&d[2]==0&&d[3]==0) flag=1 } return c } function disco() { if (flag==0) { r=ran(1, r); g=ran(2, g); b=ran(3, b); hex(1,r) hex(2,g) hex(3,b) document.bgColor="#"+t[1]+o[1]+t[2]+o[2]+t[3]+o[3] flag=50 } else { r=do_it(1, r) g=do_it(2,g) b=do_it(3,b) hex(1,r) hex(2,g) hex(3,b) document.bgColor="#"+t[1]+o[1]+t[2]+o[2]+t[3]+o[3] flag-- } if (document.all) setTimeout('disco()',50) } //--> </script>

Insert into <BODY>
<body onload="disco()">

Other Options