Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Foundations Functions Return Values

Posted by zvi raphael
zvi raphael
3,225 Points

having difficulties with challenge 1, thank you

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.

2 Answers

ntcoder
ntcoder
2,180 Points

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

Denisse Cabieses
Denisse Cabieses
6,411 Points
Denisse Cabieses
Denisse Cabieses
6,411 Points

Hi Zvi! Check here: https://teamtreehouse.com/forum/used-an-if-else-statement