js Clip's wonderful ideas and colorful gradient word effects

function colorful(obj,font,r,g,b,type){
var boxObj;
if(typeof(obj)=="string"||typeof(obj)=="number"){
boxObj = (obj);
}else{
boxObj = obj;
}
="<a href='#'>"+font+"</a>";
var num = ("a")[0].scrollWidth;
="";
for(var i=0;i<=num;i++){
var j=i+1;
var c=(255/num*i);
switch(Number(type)){
case 0:r=c;g=c;b=c;break;
case 1:r=c;break;
case 2:g=c;break;
case 3:b=c;break;
}
var iObj = ("A");
=font;
="rect(auto "+j+"px auto "+i+"px)";
="rgb("+r+","+g+","+b+")";
="#";
(iObj);
}
}