Abdullah Diaa
Published on

The Benefits of Async/Await in Node.js

Authors

As a JavaScript developer, you may have come across the terms "async" and "await" when working with Node.js. These two keywords, introduced in ES2017, provide a way to write asynchronous code that is easier to read and maintain.

In the past, developers had to use callback functions or promises to handle asynchronous operations. This often led to code that was difficult to understand and maintain. With async/await, you can write asynchronous code that looks and behaves like synchronous code.

To use async/await in Node.js, you must first mark a function as async. This is done by placing the "async" keyword before the function declaration. For example:

async function myFunction() {
  // asynchronous code goes here
}

Once a function is marked as async, you can use the "await" keyword inside it to wait for a promise to resolve. This allows you to write asynchronous code in a synchronous-looking style. For example:

async function myFunction() {
  const result = await someAsyncOperation()
  // do something with the result
}

The "await" keyword can only be used inside an async function. If you try to use it outside of an async function, you will get a syntax error.

One of the biggest benefits of using async/await in Node.js is that it makes your code easier to read and understand. Because async/await allows you to write asynchronous code in a synchronous-looking style, it is much easier for other developers (and even yourself) to read and understand what your code is doing. This can save time and reduce the potential for bugs.

Another benefit of async/await is that it makes it easier to work with promises. In the past, you had to chain multiple promises together to achieve a desired result. With async/await, you can simply "await" for each promise to resolve, making your code easier to write and maintain.

In conclusion, async/await is a powerful tool for writing asynchronous code in Node.js. It makes your code easier to read and understand, and makes it easier to work with promises. If you haven't already, give async/await a try in your next Node.js project!