Introduction
A callback function is a function passed as an argument into another function.
A callback function is intended to be executed later.
Types of Callbacks:
Asynchronous callbacks
they are executed at a later time, allowing the main program to continue running without waiting.
This is essential for preventing the application from freezing during long-running tasks like network requests.
Synchronous Callbacks
Synchronous Callbacks are executed immediately within the outer function, blocking further operations until completion.
Array methods like map(), filter(), and forEach() use synchronous callbacks.
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