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ColdFusion 9 Developer Tutorial

You're reading from   ColdFusion 9 Developer Tutorial Create robust professional web applications with ColdFusion

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Product type Paperback
Published in Jul 2010
Publisher Packt
ISBN-13 9781849690249
Length 388 pages
Edition 1st Edition
Languages
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Author (1):
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John Farrar John Farrar
Author Profile Icon John Farrar
John Farrar
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Toc

Table of Contents (22) Chapters Close

ColdFusion 9 Developer Tutorial
Credits
About the Author
About the Reviewers
1. Preface
1. Web Pages—Static to Dynamic 2. Basic CFCs and Database Interaction FREE CHAPTER 3. Power CFCs and Web Forms 4. ORM Database Interaction 5. Application, Session, and Request Scope 6. Authentication and Permissions 7. CFScript 8. CF AJAX User Interface 9. CF AJAX Forms 10. CF AJAX Programming 11. Introduction to Custom Tags 12. ColdFusion Powered Views 13. Control Logic Processing 14. Guide to Unit Testing Beyond this Book Tools and Resources Index

Progress bar


The more technology we achieve the less patient people become. If things don't happen instantly, we need to give people a sense of progress. Just seeing that we are making progress makes the waiting more pleasant. There are two ways to use the progress bar. The first is to use it completely on the client side and have it updated based on total duration. We will go with intervals for our first example and have the progress status returned from a remote object in our second example. First, here is the code for the remote object. We will call this object progress.cfc this time. In a real application, we should rarely use server-scope variables but for demo code this should be fine:

<cfcomponent>
  <cffunction name="getStatus" returnType="struct" access="remote">
    <cfscript>
      var strRet = {};
      var span = 0;
      var duration = 15;

      if(!structKeyExists(server,"progress")){
        server.progress = now();
      }
      strRet.span = abs(dateDiff...
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