What Is AJAX? Introduction and How does it Work?

In this article, Today we will learn What is AJAX? Types of AJAX Request, “How does AJAX work? Features of AJAX, Advantages of AJAX”, “Disadvantages of AJAX.” In this post, I am going to answer some questions related to “AJAX.” I hope you get your answer.

AJAX is a web development technology. All popular websites are using this technology, such as Gmail, Facebook, Google, Twitter, YouTube, and many more. AJAX’s Full Form is “Asynchronous JavaScript And XML.” Ajax is a client-side script that communicates with the server/database. Ajax is a powerful language that runs on the client-side instead of the server, which helps to bring information from the server to web page without refresh your web page.

It is not the programming language, but it is a technique to use existing programming languages ​​together to make the Web Browsing experience much faster and better. This is a technique for creating web applications.

AJAX uses XHTML content and is used with CSS for presentation, document object model, and JavaScript for display dynamic content.

AJAX is extensively used in creating a dynamic website because the process of AJAX is in the backend, and data can be fetched from the server of the web page without loading it.

Many web applications are running on the Internet use Ajax technology Such as Google, Gmail, YouTube, Facebook, Twitter, Google Maps, etc. AJAX is by far the richest Internet Application (RIA) technology. It is giving tremendous momentum to the web development industry, and many toolkits and frameworks are being released. But at the time, AJAX has browser Incompatibility and is supported by JavaScript, which is difficult to Maintain and Debug. Learning AJAX is great for any web developer, if you know HTML, CSS, Javascript, and XML well, then you can use AJAX.

What is Ajax

AJAX Syntax

AJAX can use in two different ways, Javascript and jQuery. Both ways of using AJAX are different, with the JavaScript method, you have to work on the online server because the request that AJAX sends to the webserver is only possible. When there is an active web page with web (HTTP) protocol. With the jQuery method, you use AJAX on localhost because here, we do not directly create an HTTP request which is done by jQuery. AJAX sends a request to the server in the background and updates the web page where the event occurred by the user. It will work without reloading/refreshing the web page, and therefore AJAX is used in web development.

Google initially adopted this technology when developers were working on Gmail, and today this technology.

Types Of Ajax Request

The request has a very important role in AJAX work. When an event is generated, most requests are sent. JavaScript and XMLHTTPObject are used for this.

AJAX Requests are Divided into 2 Categories.

  • Synchronous: When you want the browser (Browser) to wait until the AJAX request is completed before executing another code, you will send this type of request. The async parameter of the open () method is defined as false for this type of request. This type of request is not recommended.
  • Asynchronous: In this type of request, the processing is done in the background, which is one of the features of AJAX. For this type of request, the open () method is defined as the value of the async parameter true. By default, the AJAX request is sent only in Asynchronous mode.

How AJAX Works

  • User starts an event on a web page (page loads, a button is clicked.)
  • Then your XMLHTTPRequest object is created, and your HTTPRequest goes to the request server.
  • The server processes the HTTPRequest and processes the response and sends the data to the browser.
  • The browser updates your page content (Javascript) using JavaScript.

Features Of AJAX

  • This makes web page fast.
  • It is independent for Server Technology.
  • AJAX enhances the performance of a web page.
  • There is no need to reload the entire website by clicking on a submit button in AJAX.
  • There is no need to reload the entire web page in AJAX. It has some parts of the web page reloaded.
  • In addition to obtaining XMLHTTP objects, all processing is the same for all browser types, as it uses JavaScript.

Advantages Of AJAX

  • AJAX reduces communication between the client and the server.
  • Communicates over the HTTP protocol.
  • AJAX works independently on Server Technology.
  • In addition to obtaining an AJAX XMLHTTP object, all processing is the same for all browser types as it is used in JavaScript (Javascript).
  • AJAX is used to develop faster and more interactive web applications.
  • AJAX-based applications use very low server bandwidth (Bandwidth) because it does not require all pages to be reloaded.

Disadvantages Of Ajax

  • AJAX does not work on all browsers.
  • Large search engines like Google, Bing, are not able to properly index Ajax pages.
  • AJAX applications lack security.
  • One can view the source code written by AJAX.
  • This can increase the time of design and development.


If you like This Article What Is AJAX? Introduction and How does it Work? then Give him Your Feedback In Comments.

Follow aCodiz me on Social Media Platform

and also share Knowledge With Your Friends…

Thanks and Read Our Other Articles


Please enter your comment!
Please enter your name here