What is the difference between an Ajax website and regular Non Ajax websites?

S. No. Ajax Applications Non Ajax Applications

1. Fast Slow

2. Call back function Partial page Update Entire page update

3. Low Traffic Higher traffic

4. Low band width required High Band width required

5. Easier to navigate Difficult to navigate

High Compatibility with different

6. Less Compatible
Languages

7. Server Communication is asynchronous synchronous

8. Fast and Proper form validation Slow and error prone

9. More responsive Less responsive

10. User experience is uninterrupted

AJAX powered PHP website does what a normal PHP website does without reloading the
page, in real time.

Normal PHP Website:

1. Less chance of function and website style breaks

2. Slow loading time
3. Not secure due to uncompiled and exposed nature of programming
AJAX + PHP :

1. Little faster than casual Php (perception is faster as page doesn't load, NOT
Theoretically)
2. Real time functionality
3. Secure than PHP as it is done in real time and breaching isn't that easy
4. Function or website style may break if client has slow internet

PHP dynamically prepares chunks HTML and sends it to a client (typically the browser.) These chunks can be
entire pages, components within a page or chunks of data in one format or another.

Ajax or XHR is an asynchronous request through JavaScript to request a URL (just like our browser does) and
do something with the response (our chunk of HTML or data, maybe in JSON format.)

The difference is that Ajax happens in the background without requiring a full page reload. This is how a
website like Facebook updates your notifications even if you’re sitting on the page doing absolutely nothing.

With Ajax we can modify individual elements on the page without changing the URL or reloading the entire
page. Most web applications use JavaScript (and Fetch/XHR/Ajax) in one form or another to enrich the user
experience.

Difference between AJAX and DHTML

AJAX is a collection of interrelated web development techniques that are used to asynchronous web
applications. DHTML (Dynamic HTML) is not a coding language but actually a collection of technologies
that are used with HTML in order to make HTML more interactive. DHTML changes the elements on the
webpages depending on the user’s actions. AJAX allows the browser to request certain elements one at
a time in order to reduce the strain on the server and the Internet connection.

The webpages on the internet weren’t always as interactive and animated as they were today. It takes a
lot to create a webpage such as coding, placing, dynamic links, etc. Originally webpages were simple text
pages that were used to share information in the form of text; there were no videos, games, animations,
etc. A number of tools were later developed in order to allow all these to happen on webpages. These
tools are often employed to attract the consumer’s attention and to bring them to the webpage. DHTML
and AJAX are two of these tools that are used to make more dynamic and interactive pages.

AJAX is a collection of interrelated web development techniques that are used to asynchronous web
applications. AJAX allows that webpage to send and receive data automatically in the background,
without having to alter the webpage on the client-side. AJAX is used along with CSS, HTML, DOM,
JavaScript and XMLHttpRequest. CSS and HTML is used to give the webpage the mark up and style
information, while DOM is accessed with JavaScript to dynamically display the webpage and enables the
user to interact with the present information. JavaScript and XMLHttpRequest is used to exchange data
asynchronously between the browser and the server. A popular example of AJAX is when looking through
galleries on website, clicking next allows the user to change the image without altering the other elements
on the webpage. The term AJAX was coined in 2005 by Jesse James Garrett, though the original
technology was created in 1996 and was known as iframe tag by Internet Explorer. This tag allowed the
browser to load content asynchronously.

DHTML (Dynamic HTML) is not a coding language but actually a collection of technologies that are used
with HTML in order to make HTML more interactive. DHTML is an umbrella term for a collection of
technologies such as HTML, XHTML, JavaScript, CSS and Document Object Model. A combination of
these objects are used together in order to create more interactive and animated websites. One major
difference between standard HTML and DHTML is once a page is loaded in standard HTML, it will not
change until it receives another request from the server, however in DHTML, the elements are allowed to
change at any time, without having to return to the server. Four primary features of DHTML include
changing the tags and properties, real-time positioning, dynamic fonts specifically for Netscape
Communicator and data binding for Internet Explorer. The main purpose of adding DHTML elements on
your webpage is to allow various parts of the website, without having the whole page refresh again after
sending a signal to the server. This saves a lot of time, especially when dealing with websites that has a
large amount of content and takes long to refresh.

AJAX and DHTML are two technologies that are used in order to create more interactive webpages
compared to the plain boring HTML pages. A main difference between DHTML and AJAX is DHTML
changes the elements on the webpages depending on the user’s actions. AJAX allows the browser to
request certain elements one at a time in order to reduce the strain on the server and the Internet
connection. However, both play a huge part in improving the user experience of webpages.

What is the difference between Ajax and jQuery-Ajax

methods in jQuery?
Firstly, let’s go through what is Ajax and why it is used.
AJAX
AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster,
and more interactive web applications with the help of XML, HTML, CSS, and Java Script.
It has the following points, which shows its importance.

 AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better,
faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script.
 Ajax uses XHTML for content, CSS for presentation, along with Document Object Model and
JavaScript for dynamic content display.
 With AJAX, when you hit submit, JavaScript will make a request to the server, interpret the results,
and update the current screen. In the purest sense, the user would never know that anything was
even transmitted to the server.
 XML is commonly used as the format for receiving server data, although any format, including plain
text, can be used.
 AJAX is a web browser technology independent of web server software.
 A user can continue to use the application while the client program requests information from the
server in the background.
jQuery has several methods for AJAX functionality, which is why it is called jQuery-Ajax. Request, HTML,
XML, JSON from a remote server using both HTTP Get and HTTP Post, with it. Let us see some of these
methods:

S.No Method & Description

1. jQuery.ajax( options )
Load a remote page using an HTTP request.
 2. jQuery.ajaxSetup( options )
Setup global settings for AJAX requests.

3. jQuery.get( url, [data], [callback], [type]

Load a remote page using an HTTP GET request.

4. jQuery.getJSON( url, [data], [callback] )

Load JSON data using an HTTP GET request.
jQuery
jQuery simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid
web development. It has the following features,

 DOM manipulation - jQuery made it easy to select DOM elements, traverse them and modifying
their content by using cross-browser open source selector engine called Sizzle.
 Event handling - jQuery offers an elegant way to capture a wide variety of events, such as a user
clicking on a link, without the need to clutter the HTML code itself with event handlers.
 AJAX Support - jQuery helps you a lot to develop a responsive and feature-rich site using AJAX
technology.
 Animations - jQuery comes with plenty of built-in animation effects which you can use in your
websites.
 Lightweight - jQuery is very lightweight library - about 19KB in size ( Minified and gzipped ).
 Cross Browser Support - jQuery has cross-browser support, and works well in IE 6.0+, FF 2.0+,
Safari 3.0+, Chrome and Opera 9.0+