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Introduction to AJAX

Ajax is used to refresh a web page without having to reload it : it sends a request to the server, but typically the response is processed by the javascript that displays dynamically a new element on the browser without having to reload the entire page.
Introduction to AJAX

AJAX is a developer's dream, because you can:

  • Read data from a web server - after the page has loaded
  • Update a web page without reloading the page
  • Send data to a web server - in the background

AJAX = Asynchronous JavaScript And XML.

AJAX is not a programming language.

AJAX just uses a combination of:

  • A browser built-in XMLHttpRequest object (to request data from a web server)
  • JavaScript and HTML DOM (to display or use the data)

AJAX is a misleading name. AJAX applications might use XML to transport data, but it is equally common to transport data as plain text or JSON text.

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 a web page, without reloading the whole page.

https://www.w3schools.com/js/pic_ajax.gif
AJAX Introduction
https://www.w3schools.com/js/js_ajax_intro.asp

#JavaScript #Ajax #WebServer #Probyto #Probyto AI

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