Scope of Variables and Functions

In JavaScript, the scope of variables and functions determines their accessibility, or visibility, in different parts of a program. The scope can be classified into global scope, function scope, block scope, and module scope. Let’s dive into these types:

Global scope

Variables or functions declared in the global context are accessible throughout the entire program.

Let’s understand how to declare them:

• Global variables: Variables declared with var, let, or const outside of any function or block.

• Global functions: Functions declared outside of any other function or block.