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 trialRichard Primas
415 PointsFor some reason I'm receiving an error that states: 'this.state.players.map' is not a function. Any ideas?
It compiles successfully.
1 Answer
Steven Parker
231,236 PointsTo enable a precise answer, always show your code or provide a link to a repo or snapshot.
But generally, that message would indicate that the item you are calling a method ("map") on did not get set to an object of the type you are expecting it to be. Quite often it will contain null
or be undefined
.
So in this case, I would check to see what this.state.players
contains.