How can I optimize performance using async/await in JavaScript?

How can I optimize performance using async/await in JavaScript?

To optimize performance with async/await, ensure that you only use await on promises that need to be resolved sequentially. For parallel operations, consider using Promise.all.

Can you give me an example of using Promise.all with async/await?

Sure! Here's a simple example:

async function fetchData() {
    const [data1, data2] = await Promise.all([
        fetch('url1'),
        fetch('url2')
    ]);
    // Process data1 and data2
}

What are some common pitfalls when using async/await?

Common pitfalls include forgetting to handle errors with try/catch, using await in loops which can lead to performance issues, and not returning promises from async functions.

How does async/await compare to traditional promise chaining?

Async/await makes asynchronous code look more like synchronous code, improving readability. Traditional promise chaining can become complex and harder to follow, especially with multiple nested promises.