AJAX Guide for Beginners

AJAX Guide for Beginners

AJAX guide for beginners.

AJAX stands for Asynchronous JavaScript And XML. In a nutshell, it is the use of the XMLHttpRequest object to communicate with servers. In more simple words, AJAX is a technique for accessing web servers from a web page. AJAX allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes. This means that it is possible to update parts of the web page without reloading the whole page.

Modern websites are highly interactive and must be able to dynamically respond to user input. For example, when a user creates a new account on a website, their email has to be checked to make sure it hasn’t been registered yet. This can be done only if individual components of the website can be manipulated regardless of when the site is loaded.

The biggest benefit of AJAX is that websites no longer need to be completely reloaded to respond to user input. Static content remains unchanged, while dynamic information can be added to the DOM as needed. In the example above when creating a new user, a request is being sent to the web server which checks whether the email address being submitted by the user is available to create a new profile. Then this data is sent back to the client.

Without AJAX the form will be submitted and the entire page will be reloaded. But AJAX allows you to send a request to the server at any time using JavaScript.

If you need more AJAX examples, think of interacting with Google Maps; a user can drag the entire map using the mouse. Or when you search for something in Google, Google offers you suggestions in real time as you type. With AJAX websites can be much more responsive to user input and have much deeper levels of interactivity.

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