JavaScript and Asynchronous Programming: Understanding Callbacks, Promises and Async/Await

Asynchronous programming is a programming paradigm that allows for the execution of multiple tasks simultaneously without blocking the main execution thread. In JavaScript, this is achieved through the use of callback functions, promises, and async/await.

Callback functions

Callback functions are a way to pass a function to another function as an argument, which will be executed at a later time. This allows for the execution of a task to be deferred until a certain event occurs or a certain condition is met.

Promises

Promises are a way to handle asynchronous operations in JavaScript. A promise represents the eventual result of an asynchronous operation and can be in one of three states: fulfilled, rejected, or pending. Promises allow for the chaining of asynchronous operations and the handling of errors in a more structured way.

Async/await

Async/await is a more recent addition to JavaScript that makes it easier to write asynchronous code. It allows you to write asynchronous code that looks and behaves like synchronous code, using the async and await keywords.

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