Asynchronous programming is an essential skill when working with modern web applications. With async/await patterns, you can simplify your code and make it more readable.
This article will cover best practices and real-world examples of using async/await in JavaScript.
What are Async/Await?
JavaScript’s event loop allows non-blocking I/O operations through callback functions or promises. However, nested callbacks quickly become complex and hard to maintain. Promises help mitigate this issue but still require some syntactic overhead. Enter async/await!
Async functions return a Promise under the hood. The ‘async’ keyword indicates that the function contains one or multiple await expressions. When execution reaches an ‘await’, it pauses until the returned promise resolves, then continues from where it left off.
If no error occurs during resolution, the result value becomes the resolved value; otherwise, rejection propagates back to the caller.
