What is the difference between async/await and promise chaining?

What is the difference between async/await and promise chaining?

Async/await is syntactic sugar over promises, making asynchronous code easier to read and write. Promise chaining uses .then() to handle promises.

Can you give me an example of both?

Sure! With promise chaining, you might write:

fetch(url)
  .then(response => response.json())
  .then(data => console.log(data));

With async/await, it would look like this:

const fetchData = async () => {
  const response = await fetch(url);
  const data = await response.json();
  console.log(data);
};
fetchData();

Which one is better to use?

It depends on the context. Async/await is generally preferred for readability, especially in complex flows, while promise chaining can be useful for simpler cases.

Are there any performance differences?

Performance-wise, both are similar since async/await is built on top of promises. The choice should be based on code clarity rather than performance.