AJAX, is a set of web development techniques using many web technologies on the client-side to create asynchronous Web applications. WithAJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page.
AJAXin simple steps you can:
• Update a web page without reloading the page
• Request data from a server - after the page has loaded
• Receive data from a server - after the page has loaded
• Send data to a server - in the background
This tutorial will be useful for web developers who want learn how to create interactive webpages as well as improve their speed and usability using AJAX.
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)
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.
The HTML page contains a <div> section and a <button>.
The <div> section is used to display information from a server.
The <button> calls a function (if it is clicked).
The function requests data from a web server and displays it:
There are too many web applications running on the web that are using ajax technology like gmail, facebook, twitter, google map, youtube etc.
AJAX Related Interview Questions
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