Why does this output 1, even if i set it's "index" value to anything above 1 or 2?

Question

var numberBefore;
var numberNow;
var index;

index = 10;

if (index == 0){
document.write("Invalid Number");
}else if((index==1)||(index==2)){
document.write(1);
}else{
numberBefore = 1;
numberNow = 1;
for (var i=0;i<=index;i++){
numberBefore = numberNow;
numbernow = numberNow + numberBefore;
}
document.write(numberNow);
}

Answer 1

JavaScript is a case sensitive language. You have to change „numbernow“ to „numberNow“ in the loop.

Answer 2

i... cant... believe...it was that