Callbacks in JavaScript: Why They Exist

JavaScript is a language where functions are treated like values. This means you can store them in variables, pass them to other functions, and return them from functions. This ability is what makes callbacks possible. Callbacks are one of the most important concepts in JavaScript, especially when dealing with asynchronous programming like API calls, timers, and event handling. Functions as Values in JavaScript In JavaScript, functions are first-class citizens, which means they can be used just