Suppose that you want to design a new Ajax application, or update a legacy web application to include Ajax techniques.
How do you go about it? First you need to decide what page events and user actions will be responsible for causing the sending of an asynchronous HTTP request. You may decide, for example, that the onMouseOver event of an image will result in a request being sent to the server to retrieve further information about the subject of the picture; or that the onClick event belonging to a button will generate a server request for information with which to populate the fields on a form.
Having made the request, you need to write routines to monitor the progress of that request until you hear from the server that the request has been successfully completed.
Finally, after receiving notification that the server has completed its task, you need a routine to retrieve the information returned from the server and apply it in the application. You may, for example, want to use the newly returned data to change the contents of the page’s body text, populate the fields of a form, or pop open an information window.
How the components of Ajax application work togather
AJAX Related Interview Questions
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Anatomy Of A Website
Writing Web Pages In Html
Sending Requests Using Http
Server-side Programming In Php
A Brief Introduction To Xml
Anatomy Of An Ajax Application
The Xmlhttprequest Object
Talking With The Server
Using The Returned Data
Our First Ajax Application
Returning Data As Text
Ahah-asynchronous Html And Http
Returning Data As Xml
Web Services And The Rest Protocal
Web Services Using Saop
The Prototype.js Toolkit
Using Xoad 193
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