What is the difference between async/await and promises in JavaScript?

What is the difference between async/await and promises in JavaScript?

Async/await is syntactic sugar built on top of promises, making asynchronous code easier to read and write.

Can you give me an example of how to use async/await?

Sure! Here's a simple example:

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

This function fetches data asynchronously.

How do error handling and promises work with async/await?

You can use try/catch blocks to handle errors in async functions. For example:

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

Are there any performance differences between using async/await and promises?

In most cases, there are no significant performance differences. Async/await can make your code cleaner and easier to maintain.