Posted: September 26, 2024

How to handle asynchronous code in JavaScript?

#JavaScript

#async

#promises

Asynchronous programming is a crucial aspect of JavaScript, allowing developers to execute tasks without blocking the main thread. This is particularly important in web development, where operations like fetching data from an API or reading files can take time. In this article, we will explore the three primary methods of handling asynchronous code in JavaScript: callbacks, promises, and async/await. What is Asynchronous Code? Asynchronous code allows operations to be performed without waiting for previous operations to complete. This is essential in JavaScript, where single-threaded execution can lead to a "blocking" UI if time-consuming tasks are performed synchronously. For instance, consider a situation where you fetch data from an API. If you do this synchronously, the entire application would freeze until the data is received. Asynchronous programming enables you to continue running other code while waiting for the data to be fetched. 1. Callbacks Callbacks are functions passed as arguments to other functions and are invoked after a task is completed. This is one of the earliest techniques used to handle asynchronous operations in JavaScript.

Md Ruhul Amin

a year ago

good good (edited)

Admin

a year ago

Ruhul

a year ago

Nice

Fardus Hassan

a year ago

nice