What are some examples of asynchronous calls in programming?

What are some examples of asynchronous calls in programming?

Asynchronous calls allow a program to continue executing while waiting for a task to complete. Examples include AJAX requests, Promises in JavaScript, and async/await syntax.

Can you explain how Promises work in JavaScript?

Sure! A Promise is an object that represents the eventual completion (or failure) of an asynchronous operation. It can be in one of three states: pending, fulfilled, or rejected.

What is the difference between synchronous and asynchronous calls?

Synchronous calls block the execution until the operation completes, while asynchronous calls allow the program to continue running without waiting for the operation to finish.

Can you give me a code example of an asynchronous function?

Certainly! Here's a simple example using async/await in JavaScript:

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