Learn Closure in JavaScript-Day 5

In this article, we are going to understand the closure concept in javascript.

                                      

                   

Closures in JavaScript:

•  The closure is inner function that has access to outer function.
• In javascript, closures are created every time a function is created, at function creation time.
• A closure is a function having access to the parent scope, even after the parent function has closed.

                                              

Scope:

                  A scope in javascript defines what variables you have access to.

there are three kinds of scope-

1.Global scope

2.Local scope

3.Outer Function scope.

The closure has three scopes which are as follows:

                                       

• It has access to its own scope.                                                                                    
•  It has access to its outer function variables.
•  It has access to global variables.

Example:

Program:

output:

Thank you!!!!!!!!!!!!!