Arguments Optional stuck on second test requirement

JavaScript
1

Tell us what’s happening:
My code is getting stuck on the second test requirement, addTogether(2)(3). when i print out args it returns [2] rather than [2, 3].

This code does not work using 2 separate arguments. args[i] = arguments[i] does not return [2, 3] when calling addTogether(2)(3).

Your code so far


function addTogether() {
  let args = new Array(arguments.length);
  
  for (let i=0; i<args.length; i++) {
    if (typeof arguments[i] !== 'number') {
      return undefined;
    } else {
      args[i] = arguments[i];
    };
  };

  if (args.length===2) {
    return args[0] + args[1];
  } else if (args.length===1) {
    let c = args[0];
    return ((x) => {
      if (typeof x!== "number") {
        return undefined;
      } c + x;
    });
  };
};

addTogether(2)(3);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.84 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/arguments-optional

3

Thank you so much for your explanation, it really helped. I now understand how the second function that I have is calling for the second function call from addTogether. Now I understand the code I wrote!!

The error in my code was just that i forgot to return c + x. Otherwise this works.