Asynchronous events and callbacks are common in JavaScript, especially when dealing ... that lets you write asynchronous code as if it were synchronous, using the await keyword to pause the ...

Programmer can use synchronous callbacks when it is necessary to execute tasks in ... and will only be executed when the event happens. We can do this because JavaScript has first-class functions, ...

Callbacks were the only natively supported way to deal with async code in JavaScript until 2016, when the Promise object was introduced to the language. However, JavaScript developers had been ...