What is asynchronous JavaScript and how does it work?

What is asynchronous JavaScript and how does it work?

Asynchronous JavaScript allows code to run in the background, enabling non-blocking operations. It uses callbacks, promises, and async/await.

Can you explain the difference between callbacks and promises?

Sure! Callbacks are functions passed as arguments to be executed later, while promises represent a value that may be available now or in the future.

What is the async/await syntax?

The async/await syntax is a way to write asynchronous code that looks synchronous. You use 'async' before a function and 'await' before a promise.

Can you give me an example of using async/await?

Certainly! Here's a simple example:

async function fetchData() {
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();
  return data;
}