How to create VDF Web Applications: Difference between revisions
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asp pages are about creating HTML markup | asp pages are about creating HTML markup for serverside code in an easy way . | ||
to | This means that asp is not a '''real programming language''' - it is about creating html to got together with serverside components you develop in Visual DataFlex (VDF). If you have problems you need to solve , then the best idea is to try solve them in Visual DataFlex (or another programming language for that matter). | ||
If you are coming from the visual dataflex world on windows, then you are probably used to writing code that can respond to events immediately. | |||
Here in the web world you have to consider the fact that you are in a web browser that will have to talk to the server before getting an answer (or at least getting an answer that involves data and logic on the server). This means that you cannot run vdf code on the client inside the browser (not yet). When you develop ASP pages using vdf then you develop COM compents that run on the serverside and are 'glued' together using a scripting language like | |||
*[http://en.wikipedia.org/wiki/VBScript vbscript] | *[http://en.wikipedia.org/wiki/VBScript vbscript] | ||
*[http://en.wikipedia.org/wiki/JScript jscript] (jscript is a microsofts version of [[Javascript]] ) | *[http://en.wikipedia.org/wiki/JScript jscript] (jscript is a microsofts version of [[Javascript]] ) | ||
The scripting languages can run both on the server and the client side. | |||
= serverside = | = serverside = | ||
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= | = Web development primer = | ||
== The basics == | |||
*[[HTML]] ( validate here: [http://validator.w3.org/] ) | *[[HTML]] ( validate here: [http://validator.w3.org/] ) | ||
*[[CSS|Cascading Style Sheets]] ( validate here: http://jigsaw.w3.org/css-validator/ ) | *[[CSS|Cascading Style Sheets]] ( validate here: http://jigsaw.w3.org/css-validator/ ) | ||
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*[http://www.quirksmode.org/js/contents.html quirksmode javacript] | *[http://www.quirksmode.org/js/contents.html quirksmode javacript] | ||
*[http://www.quirksmode.org/css/contents.html quirksmode css] | *[http://www.quirksmode.org/css/contents.html quirksmode css] | ||
Revision as of 09:58, 4 October 2008
How to create VDF Web Applications page under construction
asp pages are about creating HTML markup for serverside code in an easy way .
This means that asp is not a real programming language - it is about creating html to got together with serverside components you develop in Visual DataFlex (VDF). If you have problems you need to solve , then the best idea is to try solve them in Visual DataFlex (or another programming language for that matter).
If you are coming from the visual dataflex world on windows, then you are probably used to writing code that can respond to events immediately.
Here in the web world you have to consider the fact that you are in a web browser that will have to talk to the server before getting an answer (or at least getting an answer that involves data and logic on the server). This means that you cannot run vdf code on the client inside the browser (not yet). When you develop ASP pages using vdf then you develop COM compents that run on the serverside and are 'glued' together using a scripting language like
- vbscript
- jscript (jscript is a microsofts version of Javascript )
The scripting languages can run both on the server and the client side.
serverside
- Web Business Process (these things gets registered and you can access them in asp)
- Global.asa (this is where your code is stackup up. check the list of WBP's there)
Web development primer
The basics
- HTML ( validate here: [1] )
- Cascading Style Sheets ( validate here: http://jigsaw.w3.org/css-validator/ )
- Javascript ( validate here: http://www.jslint.com/ )
quirksmode
Quirksmode.org offers valuable resources for web development:
