[Polarity]

is it still common practice to use "var"?

[umvi]

I think "let" and "const" are preferable

[hotz]

Doesn't const also get optimized better?

[dgb23]

I don’t see a good reason to use it. When I want to change a value later I use let at the top of the appropriate block, otherwise const. The code reads nicer that way.

[Tade0]

No, but it's still useful in those rare instances in which you really need broader than block scoping.

[rom-antics]

Even then I still think it's clearer to put a `let` in the outer scope instead of putting a `var` in one of the inner scopes.

[edflsafoiewq]

No, var should never be used.

[tuukkah]

... because var is function-scoped, not block-scoped like let.