What is the difference between var and let in js

Question

So I know you can use var.X and let X= to create a variable named X but what is the difference? Pls help😄

Answer 1

Quoting from Javascript Intermediate:
"Unlike the var keyword, which defines a variable globally, or locally to an entire function regardless of block scope, let allows you to declare variables that are limited in scope to the block, statement, or expression in which they are used."

Answer 2

Try searching on search bar before posting a question.
https://www.sololearn.com/Discuss/3307764/?ref=app

Answer 3

do you mean
var X = document.getElementById("x")
?
there must be no "." between var and X.

Answer 4

Thank you

Answer 5

Can I use var.X. With document.getElementById

Answer 6

Oh

Answer 7

That is what i mean but i just thought you still had to use dot notation