Arguments Optional- Need Help

JavaScript
1

Tell us what’s happening:

What am i doing wrong here?

Your code so far


function addTogether(a, b) {
  if (a === parseInt(a) && b === parseInt(b)) {

    return a + b;
  }

  else if (b == undefined) {
    return function sumtwoAnd(c) {
      return a + c;
  }
    }

  sumtwoAnd(5);
}

addTogether(2,3);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0.

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

2

Instead of returning another function when one of arguments is invalid, you should just return undefined.

You are returning functions even though arguments aren’t valid.

3

The typeof operator is very useful in this challenge. See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof for more.

4

Here is what I could come up with.
function addTogether() {
var arg = […arguments]
var a = arguments[0];
var b = arguments[1];

if (arg.length === 2){
while (typeof a === ‘number’ && typeof b === ‘number’){

return a + b
}

}
else if (typeof a !== ‘number’){
return undefined
}
else

return function(b) {
  if(typeof b === 'number' && typeof a === 'number')
    return a + b;
};

}