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Ajax is a set of web development techniques using many web technologies on the client side to create asynchronous web applications.
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What is AJAX?
AJAX is a programming technique that allows web pages to be updated asynchronously – that is, without reloading the entire page.
Using AJAX, Web applications can send and retrieve data from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. This means that you can update parts of a page without having to reload the whole page.
AJAX is not a new technology, but it is still relatively unknown – partly because it is hard to define. AJAX is a combination of several existing technologies, including:
-XML or Extensible Markup Language – a format for encoding documents that is both human-readable and machine-readable. XML forms the basis of many web services and is often used to store data.
-HTML or HyperText Markup Language – the standard markup language for creating web pages.
-DOM or Document Object Model – an API for accessing and manipulating documents. The DOM is often used to dynamically update pages using AJAX techniques.
-CSS or Cascading Style Sheets – a style sheet language used for describing the presentation of documents written in HTML or XML. CSS can be used to style the document content generated by AJAX applications.
JavaScript – a scripting language used for adding interactivity to web pages
How does AJAX work?
AJAX is a technology that allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page.
AJAX is used for many different tasks including:
-Updating content on a web page without reloading the whole page
-Sending and receiving form data
-Sending and receiving data from a database
What are the benefits of AJAX?
AJAX is a programming technique that allows webpages to be updated asynchronously, without having to reload the entire page. This means that you can update parts of a webpage without having to refresh the entire page.
AJAX has a number of benefits, including:
– smoother user experience (the page doesn’t need to be reloaded every time a user makes a change)
– faster pages (only the changed content needs to be loaded, not the entire page)
– less server load (because only the changed content needs to be processed)
AJAX is not a new technology, but it is becoming increasingly popular as more and more developers are beginning to realize its potential.
What are some examples of AJAX?
AJAX is a technique for creating fast and dynamic web pages. AJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page.
For example, when you are filling out a form, you may want to check that your username is unique without having to submit the entire form. With AJAX, you can request specific information from the server (in this case, whether or not the username is available) and receive a response without having to refresh the page.
Other examples of AJAX include:
-Auto-completing text fields as you type
-Displaying search results as you type
-Loading new content onto a page without having to refresh
