A Simple Guide to AJAX: Asynchronous JavaScript and XML

Learn how AJAX works and how to use it in your projects

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AJAX, short for Asynchronous JavaScript and XML, is a web technology that allows you to update a webpage without having to refresh it. This makes your application more dynamic and responsive to user actions. In this article, we’ll break down what AJAX is and how you can use it with modern JavaScript.

What Is AJAX?

AJAX is a way to communicate with a server asynchronously, which means that your JavaScript code can send or receive data in the background without blocking the main thread. This lets you update parts of a web page without needing to reload the whole page.

Why Use AJAX?

• Improved user experience: Pages load faster, and users don’t have to wait for the entire page to refresh.
• Better interactivity: AJAX enables more dynamic user interfaces and interactions.
• Reduced server load: You can request only the data you need, reducing unnecessary server load.

How Does AJAX Work?

AJAX uses XMLHttpRequest (XHR) or the newer fetch() API to communicate with a server. It sends data to the server, waits for a response, and then updates…