Ajax

Ajax training course
This one-day workshop will introduce attendees to one of the newest and hippest technologies on the web. Through a series of lectures and practical examples you will learn the power of the XMLHttpRequest object, and how it can be used to add advanced interactivity to your website through the principle of progressive enhancement. Using the "Hijax" concept, you will learn how to create applications that are highly flexible that degrade gracefully. Learn how to script your own Ajax solutions rather than relying on a third-party library.
This training course is taught by Clearleft Technical Director, Jeremy Keith. Jeremy is the author of the book Bulletproof Ajax, and a recognised expert on Ajax and the DOM. By the end of this course you'll have a full understanding of how the XHR object works and how it can be used to transport data between the server and browser without causing a page refresh. You will learn how to add Ajax interactivity to your page in a way that doesn't break the fundamental concepts of the web, and help improve usability. Through the practical examples demonstrated in this session, you will learn how to create advanced form validation and even an Ajax shopping cart.
This course is a perfect for intermediate developers with a good understanding of CSS and XHTML, and a basic grasp of JavaScript and the DOM.
Private training
The course is ideal for 4-8 people and prices start from £1600+VAT. Sessions can either be run on site at your offices, or at our state-of-the-art training centre in Brighton.
Introducing the XMLHttpRequest Object

1. What is XMLHttpRequest?
2. Creating an instance
3. Preparing your transmission
4. Handling the response
5. What you get back

Data Formats

1. Working with XML and the DOM
2. Working with HTML snippets and innerHTML
3. Introduction to JSON
4. Choosing the right data format

Ajax and Progressive Enhancement

1. Introducing Hijax
2. Unobtrusive JavaScript
3. Planning your application
4. Using Hijax to ensure graceful degradation

Design Challenges

1. Providing a non-JavaScript fallback
2. Providing visual feedback
3. Life without the back button

Ajax and accessibility

1. How screen readers work
2. Reading generated content

Libraries and Frameworks

1. The most popular libraries and frameworks
2. The benefits and problems associated with libraries and frameworks

Examples used:

1. Ajax contact form
2. Ajax table sorting
3. Ajax shopping cart