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JavaScript JavaScript Foundations Functions Return Values

Adam Duffield
Adam Duffield
30,494 Points

Javascript Functions

Hey, Here is the challenge set...

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.

and here is my code....

  function arrayCounter (
  var my_array = [];

  {if(my_array === 0){console.log("Fuck yeah!")};


Any ideas where I'm going wrong with this?


3 Answers

dan schmidt
dan schmidt
2,576 Points

You need to call the length property on the array:

[1,2,3].length === 3 ? 'yep' : 'nope';


Also, you cannot declare variables within your function's parameters.

function arrayCounter(myArray) {
  if (myArray.length === 0) { console.log('Fuck yea'); }

dan schmidt
dan schmidt
2,576 Points

Also understand that since we are not using return statements in our function so far, it will implicitly return 'undefined'

Ruben Leija
Ruben Leija
4,051 Points

"The function must return the length of an array passed in or 0 if a 'string', 'number' or 'undefined' value is passed in."

This question doesn't make much sense to me. A value will either always be a string, number or just null. So no matter what values is in your array the function will always return 0.