What are the differences between callbacks and promises in JavaScript?

What are the differences between callbacks and promises in JavaScript?

Callbacks are functions passed as arguments to other functions, executed after a task is completed. Promises are objects that represent the eventual completion (or failure) of an asynchronous operation, allowing for cleaner code and better error handling.

Can you give me an example of each?

Sure! A callback example: setTimeout(() => { console.log('Done!'); }, 1000); A promise example: let myPromise = new Promise((resolve, reject) => { setTimeout(() => resolve('Done!'), 1000); }); myPromise.then(result => console.log(result));

Which one is better to use?

Promises are generally better for handling asynchronous operations because they avoid callback hell and provide a more manageable way to handle errors.

What about async/await? How does that fit in?

Async/await is syntactic sugar built on top of promises, allowing you to write asynchronous code that looks synchronous, making it easier to read and maintain.