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JavaScript JavaScript Foundations Functions Return Values

Posted by Philip Gerber
Philip Gerber
5,000 Points

javascript foundation functions - missing something?

I tried return "0"; and still got error - any help! thanks

function arrayCounter (arrayIn) { if (typeof arrayIn === 'undefined') { return 0; } else{ return arrayIn.length; } } 

  arrayIn = ["A"];
  arrayCounter(arrayIn);

3 Answers

Adam Moore
Adam Moore
21,956 Points
Adam Moore
Adam Moore
21,956 Points

Here is a good explanation of how to tackle this challenge and what the challenge is looking for: Function and Length

Jason Anello
PLUS
Jason Anello
Courses Plus Student 94,610 Points
Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Philip,

You've only checked if the type is 'undefined' but you need 2 more if's to check if the type is a 'string' or a 'number'

function arrayCounter (arrayIn) {
    if (typeof arrayIn === 'undefined') {
        return 0;
    } else if (typeof arrayIn === 'string') {
        return 0;
    } else if (typeof arrayIn === 'number') {
        return 0;
    } else{
        return arrayIn.length;
    }
}
Philip Gerber
Philip Gerber
5,000 Points
Philip Gerber
Philip Gerber
5,000 Points

Thanks!