Master Closures in JavaScript

Closure in JavaScript

• Closure is a function that has access to its own scope and the scope of its outer functions.
• It is created when an inner function is defined within an outer function, allowing the inner function to remember and access the scope of the outer function even when the outer function has finished execution.

Accessing Variables

• If an outer variable is changed using an inner function, the change will be reflected in the outer variable.

Purpose of Returning the Inner Function

• The purpose of returning the inner function is to allow it to be called later, even after the outer function has finished execution, and still have access to the outer function's scope.

Accessing Variables and Parameters

• An inner function can access not only its own variables and parameters but also those of any function within the same scope, including the outer function.

Test your knowledge on closures in JavaScript with this quiz! Learn about the concept of closure and how inner functions can retain access to the variables and parameters of their outer functions. Challenge yourself to understand the important characteristics of closure and how it can be applied in JavaScript programming.