async await

Async/await is a feature in JavaScript that simplifies asynchronous code. It allows you to write asynchronous code that looks synchronous, making it easier to read and understand.

Async/await is built on top of Promises. Promises are a way to handle asynchronous code by returning an object that represents the eventual completion (or failure) of an asynchronous operation. Async/await allows you to write code that looks like synchronous code, but still uses Promises under the hood.

Here's an example of using async/await to fetch a JSON response from an API:

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

fetchData();

In this example, the `fetchData` function is marked as `async`, which means it will return a Promise. Inside the function, we use the `await` keyword to wait for the `fetch` and `json` methods to complete. This makes the code look synchronous, but it's actually asynchronous. When the Promise resolves, the `data` variable will contain the JSON response, which we log to the console.

Async/await can make your code easier to read and understand, but it's important to remember that it's still asynchronous code. You should still handle errors and use other best practices for working with asynchronous code.