VBScript Tutorials - Herong's Tutorial Examples - v6.02, by Herong Yang
What is ASP (Active Server Pages)?
This section describes the ASP (Active Server Pages) technology that allows you to write VBScript code inside HTML documents for the Web server, IIS, to execute. The VBScript code can provide dynamic contents into the final HTML document to be delivered to the client machine.
We have learned enough about client-side scripting with VBScript in previous chapters, Let's now look at server-side scripting with VBScript through the ASP technology.
ASP (Active Server Pages): Web pages that contains scripting statements executed by the Web server. The output of the scripting statements will be merged with the static parts of the page, and delivered to the browser as the response to the HTTP request initiated by the Web browser.
ASP is a technology, not a language. You can write the scripting statements in any language as long as the Web server can recognize them and execute them. The Microsoft Internet Information Server (IIS) 4.0 supports two scripting languages: Visual Basic Script (VBScript) and Java Script (JScript).
Non-ASP pages can also include scripting statements to be executed by the Web client, browser, not by the server.
An ASP enabled Web server can not only execute the embedded scripting statements, but it can also provides additional build-in objects and ability to access external objects. So there are 4 major areas the ASP technology can bring to your Web pages. We will discuss each of them in details in the following sections:
Here is a simple example of an ASP page with VBScript language, hello.asp:
<%@ language="vbscript"%> <html><body> <% response.write("Hello world!") %> </body></html>
Table of Contents
Introduction of VBScript - Visual Basic Scripting Edition
Variant Data Type, Subtypes, and Literals
Numeric Comparison Operations and Logical Operations
String Operations - Concatenation and Comparison
Variable Declaration and Assignment Statement
Expression and Order of Operation Precedence
Statement Syntax and Statement Types
Array Data Type and Related Statements
Array References and Array Assignment Statements
Conditional Statements - "If ... Then" and "Select Case"
Loop Statements - "For", "While", and "Do"
"Function" and "Sub" Procedures
Inspecting Variables Received in Procedures
Error Handling Flag and the "Err" Object
Regular Expression Pattern Match and Replacement
scrrun.dll - Scripting Runtime DLL Library
IE Web Browser Supporting VBScript
►IIS ASP Server Supporting VBScript
►What is ASP (Active Server Pages)?
Static, Client-Side and Server-Side Scripting Pages
Setting Up IIS to Run ASP Pages - asp.dll
ASP Objects: Request, Response, Session and Application
ASP Object Example - Passing Values between Pages
Interacting with External Applications - ActiveX Data Object (ADO)