Async JavaScript Basics

Understanding Asynchronous Code

JavaScript is single-threaded but can handle asynchronous operations like fetching data from APIs, reading files, or waiting for user input without blocking other code.

Promises represent future values. They can be pending, fulfilled (resolved), or rejected. Use .then() to handle success and .catch() for errors.

async/await is modern syntax for working with promises. It makes asynchronous code look and behave like synchronous code.