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!

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 AJAX Basics (retiring) AJAX Concepts A Simple AJAX Example

Posted by Ryan Mooney
Ryan Mooney
Courses Plus Student 13,323 Points

var, vs Const or Let in AJAX

In this video, Dave is using var for the variable. In other JavaScript videos, they emphasize the use of const and let for the variables. Is this because of the date the video was made (before the standard changes), scoping issues (an answer I found on stackoverflow.com), AJAX needing specific variable configuration, or just because that is what he did?

1 Answer

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,709 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,709 Points

My guess would be the course is dated. Currently it's best practice to use let and const.

Ryan Mooney
Ryan Mooney
Courses Plus Student 13,323 Points

Clayton, Thank you.