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JavaScript

Posted by Joe Thompson
Joe Thompson
4,777 Points

Return Values Challenge Problems

Cannot figure out the JavaScript Foundations Return Values Code Challenge. Here is what I have:

var my_array = [1, 2, 3];
      function arrayCounter (my_array) {
        if (typeof arrayCounter === "string") {
          return 0;
        }
        if (typeof arrayCounter === "number") {
          return 0;
        }
        if (typeof arrayCounter === "undefined") {
          return 0;
        }
        return arrayCounter.length;
      };

When I check my work it comes back with "Bummer! Wrong value returned from 'arrayCounter(undefined)' it should be 0". Yet, I have a 0 as a return after undefined? What am I doing wrong?

4 Answers

anthony de alwis
anthony de alwis
4,146 Points
anthony de alwis
anthony de alwis
4,146 Points 
function arrayCounter(array){

        if(typeof array==='string'){
        return;
        }
        if(typeof array==='number'){
        return;
        }
        if(typeof array==='undefined'){
        return;
        }
    else{ return array.length;}
       };
Cliff Garibay
Cliff Garibay
7,023 Points

This works! I also got stuck with this code challenge. Thanks Anthony for your help.

Brandon Harvey
Brandon Harvey
14,672 Points

You need to change the return to return 0. Or else it will just return undefined.

Gina Sabori
Gina Sabori
8,664 Points

Along with return 0, remove the else{ .. .} this is what finally worked for me.

function arrayCounter(array){ if (typeof array === 'string'){ return 0; }; if (typeof array === 'number'){ return 0; }; if (typeof array === 'undefined'){ return 0; }; return array.length; };

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

you have the name of the function as the variable, (arrayCounter) which is incorrect. it should be the parameter (my_array)

instead of 

typeof arrayCounter == blah

you should have 

typeof my_array == blah blah blah
Jaclyn Tsui
Jaclyn Tsui
4,834 Points
Jaclyn Tsui
Jaclyn Tsui
4,834 Points

Hi Stone, could you elaborate?

I'm getting an error with Anthony's code.

Shankar Narayan
Shankar Narayan
9,099 Points
Shankar Narayan
Shankar Narayan
9,099 Points

thanks anthony, that works.

Juan Pablo Vasquez
Juan Pablo Vasquez
3,521 Points
Juan Pablo Vasquez
Juan Pablo Vasquez
3,521 Points

missing the "else" statement... thank!