Because you have the initalization of your arr variable inside your loop so it continues to get reset.:)

Hi! I can't seem to see why this isn't working. Any clues?

var FilterString = function(value) {
  var newarr = value.split("");
  for(var i = 0; i < newarr.length; i++){
    var arr = [];
    if (Number(newarr[i]) !== "NaN") {
      arr.push(newarr[i]);    
    }
  }
  return Number(arr);
}

Thanks in advance!

Someone with a legitimate argument at least. You're absolutely right, and I retract my initial discourse. I guess I was going off of the majority of 8 kyu kata not being so simple. Thanks for clearing that up.

According to the kata ranking system here is a description of 8 kyu: Imgur
Seems to fit "Basic variable assignment" and "Basic math operations"

lol. what is this the military? i wasnt disrespecting him, merely giving constructive criticism. you shouldn't take yourself and your 'rank' so seriously, because ultimately, it doesn't matter.

You should respect Kyu rang 8.

I don't think this was really challenging enough to be on here, this is more something you'd learn on Codecademy. I thought this site was for people who had the working basics of programming down at least.

Test cases check if your method return proper value, so you should add proper keyword :)

A "power of 4" is something like 4^x, not x^4.

Is 3^4 not 81? I feel like I'm missing something here...

I think where you're going wrong is that your for loop caps i by n.length rather than the value of n.

Also your short-if should probably have a false condition with :