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Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
Ajax technology
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Ajax technology

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AJAX = Asynchronous JavaScript and XML. …

AJAX = Asynchronous JavaScript and XML.

AJAX is not a new programming language, but a new way to use existing standards.

AJAX is the art of exchanging data with a server, and updating parts of a web page - without reloading the whole page.

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  • 1. By SAFAL AGRAWAL
  • 2. Why AJAX ?  What is AJAX ? Technologies Used In AJAX Classic vs. AJAX What is ASP.NET AJAX? 3-Tier Client/Server applications using AJAX. ASP. Net AJAX Framework Characteristics of Conventional Web Applications Macromedia Flash Real-Life Examples of AJAX AppsBy SAFAL AGRAWAL
  • 3.  Intuitive and natural user interaction No clicking required Mouse movement is a sufficient event trigger  "Partial screen update" replaces the "click, wait, & refresh" user interaction model  Only user interface elements that contain new information are updated asynchronously  The rest of the user interface remains displayed without interruption By SAFAL AGRAWAL
  • 4. Standards-based presentation using XHTML and CSS Dynamic display and interaction Using the Document Object Model Data Interchange and Manipulation using XML and XSLT Asynchronous data retrieval using XMLHttpRequest JavaScript binding everything together By SAFAL AGRAWAL
  • 5. AJAX Uses HTTP Requests With AJAX, your JavaScript communicates directly with the server, through the JavaScript XMLHttpRequest object With an HTTP request, a web page can make a request to, and get a response from a web server - without reloading the page. The user will stay on the same page, and he or she will not notice that scripts request pages, or send data to a server in the background. By SAFAL AGRAWAL
  • 6. JavaScript Loosely typed scripting language  JavaScript function is called when an event in a page occurs  Glue for the whole AJAX operation DOM Represents the structure of XML and HTML documents API for accessing and manipulating structured documents CSS Allows for a clear separation of the presentation style from the content and may be changed programmatically by JavaScript XMLHttpRequest JavaScript object that performs asynchronous interaction with the server By SAFAL AGRAWAL
  • 7. Scripting language Dynamic and weakly typed Prototype-based with first-class functions Semantics similar to functional languages Standardized as ECMAScript Supported by most modern browsers But sometimes disabled for security reasons Although standardized, browser-specific issues exist By SAFAL AGRAWAL
  • 8. Object Oriented Representation for XML and HTML documents Based on Hierarchical (Tree) Structure Allows programs and scripts to build documents, navigate their structure, add, modify or delete elements and contents Provides a foundation for developing querying, filtering, transformation, rendering etc. applications on top of DOM implementations By SAFAL AGRAWAL
  • 9. Set of Formatting rules that tell the browser how to present the document Helps to separate the content from the presentation Reduce the download time by removing the formatting information from the document More control over formatting than HTML By SAFAL AGRAWAL
  • 10. A JavaScript Class that lets you make asynchronous HTTP requests from JavaScript Make an HTTP request from a JavaScript event A call back JavaScript function is invoked at each state of the HTTP request & response First introduced by MS as an ActiveX object Some XMLHttpRequest Methods Open: Specify the HTTP method, URL and async/sync Send: Initiates the request. Can also specify POST data By SAFAL AGRAWAL
  • 11. OnReadyStateChange - call back function for state changes ReadyState - the current state of the HTTP call ResponseText - the text result of the request ResponseXML - DOM xml object from the request Status - HTTP status code of the response StatusText - HTTP status text By SAFAL AGRAWAL
  • 12. By SAFAL AGRAWAL
  • 13. High Productivity AJAX Development Framework Fewer concepts, fewer lines of code Application and UI building blocks for common scenarios Works/builds on Top of ASP.NET. Easy to Author, Debug, and Maintain Clean separation of content, style, behavior, & code Well integrated with design and development tools Seamlessly integrated application model Works with ASP.NET pages and server controls Allows access to ASP.NET web services & components Standards-Based: Works Cross-Browser! A Framework for building Richer, more Interactive, Standards-based Web Experiences By SAFAL AGRAWAL
  • 14. By SAFAL AGRAWAL
  • 15. Desktop application “Look and Feel” Richer user interactions Improved scalability Increased responsiveness Richer application functionality Better end-user experiences Decreased bandwidth utilization More rapid user feedback By SAFAL AGRAWAL
  • 16. Scenarios Mash-up and composite applications and sites Components and Gadgets (Live.com, Windows Sidebar) Powerful script framework Rich type system and class library for JavaScript Component model and UI framework Rich client-side data access and data binding Easily integrated with server application model Easily consume web services from browser Script access to ASP.NET application services Server-side bridge to reuse 3rd party services By SAFAL AGRAWAL
  • 17. Server-centric web sites and apps  Work with existing server application model Keep core UI/application logic on server  Improve latency, interactivity, personalization Client-centric browser applications  Fully exploit DHTML in presentation tier  The DOM is back … never went away ;-)  Use AJAX for data, services, composition  Enable new immersive experiences ASP.net AJAX provides a great framework for both By SAFAL AGRAWAL
  • 18. By SAFAL AGRAWAL
  • 19. The client architecture includes libraries for component support, Browser compatibility, Networking, and Core services. Client components enable rich behaviors in the browser without PostBacks Components, which are non-visual objects that encapsulate code. Behaviors, which extend the behavior of existing DOM elements. Controls, which represent a new DOM element that has custom behavior.By SAFAL AGRAWAL
  • 20. By SAFAL AGRAWAL
  • 21. The server pieces that support Ajax development consist of ASP.NET Web server controls and components that manage the UI and flow of an application. The server pieces also manage serialization, validation, and control extensibility.  There are also ASP.NET Web services that enable you to access ASP.NET application services for forms authentication, roles, and user profiles. Partial-page rendering, which updates regions of the page by using an asynchronous PostBack. By SAFAL AGRAWAL
  • 22. “Click, wait, and refresh” user interaction Any communication with the server forces a page refresh Synchronous “request/response” communication model The user has to wait for the response Page-driven: Workflow is based on pages Page-navigation logic is determined by the server By SAFAL AGRAWAL
  • 23. Navigation & control Easier movement within or between Websites Searching Improved search engine capabilities Communication Aids for human-to-human and human-to-computer interaction Web services Ajax is useful for supporting Service-Oriented Architectures (SOA) System tasks Background tasks not directly apparent to the user By SAFAL AGRAWAL
  • 24. Designed for playing interactive movies  Programmed with ActionScript  Implementation examples Macromedia Flex Laszlo suite (open source) Pros: Good for vector graphics Cons: Browser needs a Flash plug-in ActionScript is proprietary and hard to debug By SAFAL AGRAWAL
  • 25. No plug-ins for AJAX Flash development tools cost money Flash typically has slower page load time Flash can work on older browsers ActionScript doesn't have a cross Browser Issues Flash can access other domains if There is a crossdomain.xml file By SAFAL AGRAWAL
  • 26. By SAFAL AGRAWAL
  • 27. By SAFAL AGRAWAL
  • 28. A user can drag the entire map by using the mouse Instead of clicking on a button or something The action that triggers the download of new map data is not a specific click on a link but a moving the map around with a mouse Behind the scene - AJAX is used The map data is requested and downloaded asynchronously in the background Other parts of the page remains the same No loss of operational context By SAFAL AGRAWAL
  • 29. Simple navigation & control Simple search tasks Non-Synchronizable system tasks By SAFAL AGRAWAL
  • 30. AJAX represents a generic application model that would enable more interactive, more responsive, and smarter Web applications. AJAX is not tied to a particular programming language, data format, or network object and is defined by two core attributes: partial screen update and asynchronous communication. By SAFAL AGRAWAL
  • 31. http://www.Google.com http://msdn.microsoft.com/en-us/library /ee341002.aspx http://jquery.com http://www.Bing.com http://www.asp.net http://www.a jax.org http://en.wikip edia.org/wiki/AJAX By SAFAL AGRAWAL
  • 32. By SAFAL AGRAWAL

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