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 trialPeter Donaghy
3,875 Pointsvar, let or const?
Is there a reason we use var here rather than let or const?
1 Answer
Steven Parker
231,268 PointsThis course was released in 2014, before "let" and "const" were officially part of the language. If it were being recorded today this video would likely use "const" instead.
However, that said, I still personally like to use "var" for global variables (such as in this example) to distinguish them from those in a more limited scope.
Common reasons for choosing "var" in modern code have to do with the differences in the way it handles scope and hoisting. For more details, see these MDN pages on let and var.
Peter Donaghy
3,875 PointsPeter Donaghy
3,875 PointsOk great, thanks for the reply.