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
Alvin Liang
12,246 PointsHELP! Return value!
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.
no idea what's wrong with my code... some help please!
function arrayCounter (myarray) {
if (typeof myarray === 'undefined', 'string', 'number') {
return 0; }
return myarray.length;
}
2 Answers
Jeff Busch
19,287 PointsHi Alvin,
You're kind of close. You need to replace the commas with the or ( || ) operator. You also need typeof a couple more times.
Jeff
if (typeof myarray === 'undefined' || typeof myarray === 'string' || typeof myarray === 'number')
Alvin Liang
12,246 Pointsthanks