Why using "let" only

#1

why using only “let” to create objects of class type?
Can we use “var” or just name of object for creating objects like we do for declaring variables ?

#2

You can use var there is no obligation but var scope gets little confusing, check this to see where to use which one: https://www.geeksforgeeks.org/difference-between-var-and-let-in-javascript/#:~:text=var%20and%20let%20are%20both,program%20as%20compared%20to%20let.

#3

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