Description
Ajax: - Ajax is a set of web development techniques that uses various web technologies on the client-side to create asynchronous web applications. With Ajax, web applications can send and retrieve data from a server asynchronously without interfering with the display and behaviour of the existing page.
AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS, and Java Script.
- Ajax uses XHTML for content, CSS for presentation, along with Document Object Model and JavaScript for dynamic content display.
- Conventional web applications transmit information to and from the sever using synchronous requests. It means you fill out a form, hit submit, and get directed to a new page with new information from the server.
- With AJAX, when you hit submit, JavaScript will make a request to the server, interpret the results, and update the current screen. In the purest sense, the user would never know that anything was even transmitted to the server.
- XML is commonly used as the format for receiving server data, although any format, including plain text, can be used.
- AJAX is a web browser technology independent of web server software.
- A user can continue to use the application while the client program requests information from the server in the background.
- Intuitive and natural user interaction. Clicking is not required, mouse movement is a sufficient event trigger.
- Data-driven as opposed to page-driven.
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Reviews
4
Sanjay (Reviews)
My trainer was wonderful.He has very deep knowledge of this subject.He always wants to give his Best during the training rather he gave the best.Thanks to Leosoft IT.
4
Vikram M (Reviews)
I recently finished my Ajax training from Leosoft IT. The trainer is expert in his field, very knowledgeable. He enjoys teaching and challenging his students. It was a good experience and i learned a lot.
5
Arun K (Reviews)
The course is very detailed. I'm very glad i joined them. I recommended this training to many of my friends and they are joining as well now.
Introduction of Ajax
- Request object Creation
- Requesting the data
- Asynchronous data transfer
- Using the readyState property
- Callback function
- Using inner HTML
- Sending the request
- Requesting the data
- Error handling with try/catch
- Understanding HTTP
Using Xml and Json in Ajax Applications
- Introduction to XML
- XML and the DOM
- ResponseText Usage
- Using responseXML
- JSON vs XML
- Basics of JSON
- Using JavaScript literals
- CSS with Ajax
Object-Oriented Javascript and Custom Ajax Objects
- New operator
- Object constructors
- Prototypes
- Custom Ajax objects
- Ajax and forms
- Encoding
Troubleshooting and Debugging Ajax
- on error event handler
- Debugging Ajax with Firebug
- Tools for navigating the DOM
- Firefox DOM Inspector
- IE DOM Inspector
- Mouseover DOM Inspector (MODI)
- List of Live HTTP Headers
- Explain HTTP Status Codes
Using Javascript Libraries and Creating A Widget
- JavaScript libraries/frameworks
- Three types of libraries/frameworks
- DOM extension
- Application conveniences
- Widgets
- Explain The Prototype JavaScript Framework
- Using Prototypes Ajax Objects
- Using an accordion widget to display an Ajax response
Working With Xml Feeds and Providing Feedback to the User
- Working with XML News Feeds
- RSS .9x
- RSS 2.0
- RSS 1.0
- Atom
- Using the Scriptaculous library for visual effects
- The yellow fade technique
- Drag and drop functionality