What are callback and promise? The callback is a function that is passed as a parameter to another function. And this function will be called inside the function. A promise is an object which is used ...

Handling asynchronous operations efficiently is crucial for creating responsive and high-performing applications. Two fundamental concepts that developers often use to manage these operations are ...

Asynchronous code (async code) says: go do something while I do other things, then let me know what happened when the results are ready. Also known as concurrency, async is important in a variety of ...