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JavaScript JavaScript Foundations Functions Return Values

Posted by Aleksandr Fesenko
Aleksandr Fesenko
Courses Plus Student 1,929 Points

Can't understand what this task want from me...

var qwer = [333, undefined, "alex"];
function arrayCounter(qwerItem) {
   if (typeof qwer[qwerItem] !== "undefined" || typeof qwer[qwerItem] == undefined || typeof qwer[qwerItem] == "object") {
       return qwer.length;
    } else {
       return 0;
    }
}

1 Answer

Justin Horner
STAFF
Justin Horner
Treehouse Guest Teacher
Justin Horner
Justin Horner
Treehouse Guest Teacher

Hello Aleksandr,

The challenge wants you to return 0 if the parameter value passed in is a string, number or is undefined.

The first issue is you are checking an element in the array, but you should only be checking the type of the parameter passed in.

In your function you are checking for 'object' is a type to return 0 for. Instead of checking that the type is not object, check that the type is not number.

Also, you only need to create the function itself. You can remove your array above your function.

I hope this helps.

Aleksandr Fesenko
Aleksandr Fesenko
Courses Plus Student 1,929 Points

thanks for help.