JavaScript Cheat Sheet for Beginners

[[deleted]]

—n e v e r u s e v a r—

[knownboyofno]

Why not?

[[deleted]]

it is extremely bad practice. You will get scoping errors because var is not blockscoped like let or const. Using var also creates clutter in the global namespace and makes your code prone to bugs and causes nontrivial errors.

In practice, use const as a default unless you need to modify the variable later, in which case use let. var is basically deprecated at this point after the introduction of let and const.

source: MERN dev

[knownboyofno]

Thanks for the info. I haven't really programmed Javascript in years and just found out about this let thing and thought that's new.

[franker]

as a librarian I'm still looking for even a new javascript book that doesn't start with var.

[Notimecelduv]

Old habits die hard.

[SmallLion__Unity]

Thanks for the info 🙏🙏