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Ajax Introduction

Ajax Architecture

Ajax Definition
Ajax (Asyncronous Java Script XML) was the extended version of Javascript with using XML as media to communicate with web server, this approaching make Ajax become lighter when being processed, in another word, Ajax only update the web page partially, so intercation between user and Web Server can running “asynchronously”.

Ajax Architecture

Ajax Framework consist of  couple of layers there are :

1. Javascript : The Programming language that generally already being supported by general browser to give interaction for user and processed on the client side,  Javascript basically from C , the original name of  Javascript was LiveScript from Netscape.
2. Document Object Model(DOM):  Depict the structure of web page and can be accessed by using Javascript.
3. Cascading Style Sheets (CSS): Take part as visual element of  Web page, CSS was being used by AJAX to modify the User Interface  
4. XMLHttpRequest : Was the client-script for make HTTP request, Ajax Application using XMLHttpRequest to make asynchronous communication between Client and Server !