Learn how to create a callback function in JavaScript and use it for various purposes, such as asynchronous programming, modularity, flexibility, and custom events.

Javascript is synchronous means single threaded language code is executed line by line, callback functions gives the accessibility to do Asynchronous task in synchronous single threaded language.

Callback-Functions-in-JavaScript Few years back, I went to a restaurant named as 'The Inefficients'. Keeping up with their names, they had maintained following way working: ...

Callbacks work fine for handling asynchronous code in JavaScript, but promises and the async and await keywords are cleaner and more flexible.

Learn how to create a callback function in JavaScript and use it for various purposes, such as asynchronous programming, modularity, flexibility, and custom events.