This document provides an overview of Active Server Pages (ASP) programming. It discusses the differences between client-side and server-side script processing. Client-side processing occurs on the user's computer browser using JavaScript, while server-side processing occurs on the web server using ASP scripts like VBScript. Server-side processing allows data to be stored in databases and controls user access, while client-side processing is faster but cannot retain global data. The document also reviews ASP implementation using IIS servers, and the Request and Response objects used to access information passed between the client and server.

1. INTERNET
PROGRAMMING
ACTIVE SERVER PAGE
(ASP)

2. INTRODUCTION
SCRIPT
PROCESSING
Client Side
Meaning: Processing
that are conducted at
the user’s
computer(browser)
Server Side
Hardware
Software
Script used: JavaScript
Web server  Internet
Information
Services(IIS)
Script used: ASP  VBscript

3. CLIENT SIDE
PROCESSING
Advantages
Disadvantages
Faster to display
output since workload
is distributed to user’s
PC
Cannot retain global
data
Customizeable output
– personalized
experienced
Cannot store data
from user into
database

4. SERVER SIDE
PROCESSING
Advantages
Data from user can be stored
into database. Eg: order,
reservation, feedback.
Web server controls user’s
browsing selection. Eg: If
certain pages are off-limit to
ordinary users, server-side
scripting can be employed to
block the pages from being
viewed by the user.
Disadvantages
The processing is centered at
the server  will put burden
of processing on the server
instead of the client.

5. IMPLEMENTING SERVER-SIDE
SCRIPTING (ISS)
• Web browser
request an ASP file
from the server
IIS
ASP
MODULE
IIS sends plain
HTML file to be
displayed in the
web browser

6. WWW
services
FTP
services
Gopher
Services
• Provide simple
document(textbase)over the
internet

7. a web page that is
processed by a web
server
a program that
runs inside a web
server (IIS/PWS)
What
is ASP
a Microsoft
Technology
Scripts in an ASP
file are executed
on the server
ISI
is Internet
Information
Services comes
as a free
component with
Windows 2000 &
Windows NT 4.0
option pack
PWS
is Personal
Web Page, a
smaller scale
version but
fully function
like IIS

8. JavaScript vs. VBScript
JavaScript is
larger and
more complex
language than
VBScript
JavaScript is, in
some ways, more
powerful than
VBScript
JS is an open
protocol. VBScript
is not
JavaScript
vs.
VBScript
JavaScript is more aware of
HTML than VBScript and has
numerous formatting and
parsing methods for creating
and analyzing HTML tags
JS is case
sensitive.
VBScript is
not

9. Basic ASP Scripting Style
It begins with
(for JavaScript)
<%@language=
JavaScript%>
we must put tag
<%…………%>
and start writing
code between
the tags
Server side scripting is
a script that is
executed by the web
server, then the results
of which are passed on
to the calling client

10. STYLE OF WRITING SCRIPTS
indicate inline server
side script in your page
by placng the
programming
statements between the
following tags <% %>
WRITING
INLINE
SCRIPTS
server side scripting
engine in the order that
it appears in the ASP
page executes the script

11. INTERPERSING
INLINE
SCRIPTS
intersperse inline
script within an ASP
The script is
executed in the
order in which it is
encountered

12. Working
with ASP
Object
Response object
Server object
Use to access
information
passed by HTTP
requestc
Use to access methods
and properties on the
server
Request object
Used to control the
information sent to
the client

13. Analogy
The best way to understand these two objects is to think of a
telephone call.
When u place a call, u are requesting that someone on the
other end of the line pick up the phone.
When that person answers the phone, he/she issues a response
to your request (the ringing phone).
Depending on what the person says, you process the results of
your request by taking specific actions depending on whom you
are talking to and for what purpose.

14. Request Object Collection
Client Certificate
• User certificate is required for
access to the page
Cookies
• Cookies are sent to the server for
examination
Form
• Takes all values passed by html form
QueryString
• Makes available to the web server all
values contained
Server Variables
• Makes available all the HTTP header values
as sent by the user with the request.