and Browser Server Models
Jim Fawcett
CSE686 Internet Programming Summer 2005
Topics
Web Programming Model Browser Model Server Model
Client/Server - Current Web Model Client Computer
Internet Information Server
Windows 2000 Server
HTML
HTML File ActiveX Controls, Java Applets
CAB
Browser
Renderer
htm, txt, jpg, bmp, doc, vsd
HTML
CGI Application written in Perl
HTTP Internet Services API (ISAPI)
ISAPI calls and notifications
Legacy Applications SQL Server
Script Engine
ISAPI calls and notifications
DLL created with C++
Script Engine ActiveX Controls, Java Applets
VBScript, JavaScript
Active Server Pages (ASP)
Active Data Object (ADO)
ActiveX Controls, Java Applets
CAB
FTP Client
FTP
FTP Server
Files of any Type
Browser Object Model
Window
Frame
Event Document Navigator Form Location Anchor Script Link History Element
Window Object
Used to obtain information about:
Summary
the state of a browser window the document in a window Window events Properties: Methods: Collections: Events: Objects:
Example: cse686/lecture2/DHTMLex1.htm
parent, screenLeft, .... open, resizeBy, ... frames onError, onLoad, ... event, document, external, screen, ...
Event Object
Event objects provide information about events on a web page. Summary
Example: cse686/lecture2/DHTMLex2.htm
Properties: Methods: Collections: Events:
altKey, button, clientX, keyCode, ... none bookmarks, (data) boundElements none
Document Object
Represents the HTML document in a browser window Summary
Example: cse686/lecture2/DHTMLex3.htm
Properties: BGCOLOR, DIR Methods: attachEvent, createElement, ... Collections: all, children, images, ... Events: onclick, ondrag, ...
Form Object
Used to collect and display user information, validate input, and send data to a web server. Summary
Example: cse686/lecture2/DHTMLex4.htm
Properties: Methods: Collectons: Events:
action, firstChild, method, ... submit, ... all, elements, ... onkeydown, onsubmit, ...
Server Object Model
Application Application Object Object Request Request Object Object Response Response Object Object Server Server Object Object Session Session Object Object
File Access Component Ad Rotator Component Browser Capabilities Component Content Linker Component Active Data Object Component
Application Object
Share information between all users of your web site. Summary
Properties: Methods: Events:
None Collections: Contents.Remove, Contents.RemoveAll, Lock, Unlock Contents, StaticObjects OnEnd, OnStart
Request Object
Retrieve information from the current user.
Summary
Access all information in the HTTP request. Used to extract data from a form or URL parameters. Properties: Methods: Collections: Events:
Example:
Total bytes BinaryRead ClientCertificate, Cookies, Form, QueryString, ServerVariables None see DHTMLex4.asp handout
Response Object
Return information to the user's browser. Summary
Properties:
Example: Example:
Methods: Collections: Events:
Buffer, CacheControl, Charset, ContentType, Expires, ExpiresAbsolute, IsClientConnected, PICS, Status AddHeader, AppendToLog, BinaryWrite, Clear, End, Flush, Redirect, Write Cookies None
cse686/lecture2/ASPex1.asp cse686/lecture2/ASPex2.asp
Server Object
Determine server specific properties. Load ActiveX dlls Summary
Example:
Properties: Methods: Events: None
ScriptTimeout CreateObject, Execute, GetLastError, HTMLEncode, MapPath, Transfer, URLEncode
cse686/lecture2/ASPex5.asp
Session Object
Saves information about the current user as cookies on the client machine. Summary
Properties: Methods: Collections: Events:
CodePage, LCID, SessionID, Timeout Abandon, Contents.Remove, Contents.RemoveAll Contents, StaticObjects Session_OnEnd, Session_OnStart
Server Component Objects
Dictionary Object FileSyst...