AJAX tutorial AJAX is a developer's dream, because 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 What is AJAX? 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 applications might use XML, plain text or JSON text to transport data. 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. How ajax works 1. An event occurs in a web page (the page is loaded, a button is clicked) 2. An XMLHttpRequest object is created by JavaScript 3. The XMLHttpR...
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