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JavaScript

varis darasirikul
varis darasirikul
10,832 Points
Posted by varis darasirikul
varis darasirikul
10,832 Points

Troubles with JavaScript Foundations,Function Challenge task

Around line 17, create a function named 'arrayCounter' that takes in a parameter which is an array. The function must return the length of an array passed in or 0 if a 'string', 'number' or 'undefined' value is passed in.

I wrote: <script>

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

</script>

it doesn´t work. and i don't know what wrong?

5 Answers

davidalvarado
davidalvarado
7,544 Points
davidalvarado
davidalvarado
7,544 Points

Ok.. I got it to pass with this:

function arrayCounter (a) {
        if (typeof a === 'string' || typeof a === 'number' || typeof a === 'undefined') {
                    return 0;
        }
                    return a.length;
 }
James Barnett
James Barnett
39,199 Points
James Barnett
James Barnett
39,199 Points

Good job solving your own problem, that's the best way to learn.

Remember, we're here to give help, not answers. Next time instead of just sharing the end result, why don't you tell us about how you figured it out. For instance ... use a logical or inside of the a single if statement would have made a great hint.

davidalvarado
davidalvarado
7,544 Points
davidalvarado
davidalvarado
7,544 Points

I'm also stuck on this, doesn't seem the instructions are very clear.. also using an "object" doesn't seem logical seeing that in this track we haven't even covered them.. anyone else have a suggestion or can clarify?

davidalvarado
davidalvarado
7,544 Points
davidalvarado
davidalvarado
7,544 Points

the || stands for "or"

paul12
paul12
9,167 Points
paul12
paul12
9,167 Points

Hi you need to use 'object' and not 'array' and it should work.