What is asynchronous programming and can you give me some examples?

What is asynchronous programming and can you give me some examples?

Asynchronous programming is a method that allows a program to perform tasks without blocking the execution of other tasks. For example, in JavaScript, you can use promises and async/await to handle asynchronous operations like fetching data from an API.

Can you explain how promises work in JavaScript?

Sure! A promise in JavaScript 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. You can use .then() to handle the fulfilled state and .catch() for the rejected state.

What about async/await? How is it different from using promises directly?

Async/await is syntactic sugar built on top of promises. It allows you to write asynchronous code that looks synchronous, making it easier to read and maintain. You use the async keyword before a function to enable it, and await to pause execution until the promise is resolved.

Can you give me a simple code example using async/await?

Certainly! Here's a simple example:

async function fetchData() {
    try {
        const response = await fetch('https://api.example.com/data');
        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error fetching data:', error);
    }
}

This function fetches data from an API and logs it to the console.