Ajax for Web Application Developers

Chapter 16. The Observer Pattern As you have been learning throughout this part of the book, design patterns are extremely useful when developing large-scale applications. Design patterns provide code flexibility and help establish a way of ...

Pattern Overview The Observer pattern is a design pattern that is used to observe the state of an object in an application. The observed object allows other objects to register and unregister as observers. The observers are notified when specific ...

Creating an Error-Handling Object An error-handling object is essential when building and releasing large web applications that use heavy amounts of JavaScript. While building, error handling is very useful for identifying bugs in your code so tha...

Using the Error-Handling Object Error handling is essential to a successful web application, but it is often overlooked and deemed a boring chore to developers. Using the Observer pattern for Ajax error handling allows us to create an extremely in...