• Callback is a function that is to be executed after another function has already been executed. • In JavaScript, functions are objects. Because of this, functions can take functions as arguments, ...

Callbacks are references to executable code that higher levels of software pass into a function. These callbacks have the ability to greatly increase the portability and reuse of embedded software, ...

Callback-style function or module whose methods you want to promisify. By default, the promisified function will only return the second argument from the callback, which works fine for most APIs. This ...

A callback operation in Java is one function that is passed to another function and executed after some action is completed. A callback can be executed either synchronously or asynchronously. In the ...

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 ...