Book Image

ColdFusion 9 Developer Tutorial

By : John Farrar
Book Image

ColdFusion 9 Developer Tutorial

By: John Farrar

Overview of this book

Adobe ColdFusion is an application server, renowned for rapid development of dynamic websites, with a straightforward language (CFML), powerful methods for packaging and reusing your code, and AJAX support that will get developers deep into powerful web applications quickly. However, developing rich and robust web applications can be a real challenge as it involves multiple processes.With this practical guide, you will learn how to build professional ColdFusion applications. Packed with example code, and written in a friendly, easy-to-read style, this book is just what you need if you are serious about ColdFusion.This book will give you clear, concise, and practical guidance to take you from the basics of ColdFusion 9 to the skills that will make you a ColdFusion developer to be reckoned with. It also covers the new features of ColdFusion 9 like ORM Database Interaction and CF Builder.ColdFusion expert John Farrar will teach you the basics of ColdFusion programming, application architecture, and object reuse, before showing you a range of topics including AJAX library integration, RESTful Web Services, PDF creation and manipulation, and dynamically generated presentation files that will make you the toast of your ColdFusion developer town.This book digs deep with the basics, with real-world examples of the how and whys, to get more done faster with ColdFusion 9.
Table of Contents (22 chapters)
ColdFusion 9 Developer Tutorial
Credits
About the Author
About the Reviewers
Preface
Index

CFAJAXProxy


This is another very popular AJAX programming feature. This tag allows us to bind AJAX component changes to CFCs, JavaScript, and URLs without the requirement of an AJAX component to pass through it. It also allows us to interact with CFCs directly from JavaScript without binding to any other AJAX component. The JavaScript interface is created for us, and we can reuse the CFC as if it was present locally inside the browser's JavaScript. It's very simple and acts as a good solution. Let's take a look at how it works.

CFAJAX proxy binding

We are going to build two textboxes that do arithmetic. The application only adds or subtracts. The first line of our code binds to the radio button set with the name calcType. We will bind to the click event. When either of the buttons is clicked, the call is made to the JavaScript function doCalc() passing the value of the radio button selected. Then the JavaScript function extracts the values of the two boxes and makes sure that they are floating...