ASP Browser Capabilities Component
Examples
The Browser Capabilities Component
This example shows how to determine the type, capabilities and version
number of each browser
visiting your site.
ASP Browser Capabilities Component
The ASP Browser Capabilities component creates a BrowserType object that determines the type, capabilities and version
number of each browser
that visits your site.
When a browser connects to a server, an HTTP User Agent Header is also sent
to the server. This header contains information about the browser (like browser
type and version number). The BrowserType object then compares the information
in the header with information in a file on the server called "Browscap.ini".
If there is a match between the browser type and version number sent in the
header and the information in the "Browsercap.ini" file, you can use the BrowserType object
to list the properties of the matching browser.
If there is no match for the browser type and version number in the Browscap.ini file, it
will set every property to
"UNKNOWN".
Syntax
<%
Set MyBrow=Server.CreateObject("MSWC.BrowserType")
%> |
The example below creates a BrowserType object in an ASP file, and displays a table showing
some of the capabilities of the current browser:
<html>
<body>
<%
Set MyBrow=Server.CreateObject("MSWC.BrowserType")
%>
<table border="1" width="100%">
<tr>
<th>Client OS</th>
<th><%=MyBrow.platform%></th>
</tr><tr>
<td >Web Browser</td>
<td ><%=MyBrow.browser%></td>
</tr><tr>
<td>Browser version</td>
<td><%=MyBrow.version%></td>
</tr><tr>
<td>Frame support?</td>
<td><%=MyBrow.frames%></td>
</tr><tr>
<td>Table support?</td>
<td><%=MyBrow.tables%></td>
</tr><tr>
<td>Sound support?</td>
<td><%=MyBrow.backgroundsounds%></td>
</tr><tr>
<td>Cookies support?</td>
<td><%=MyBrow.cookies%></td>
</tr><tr>
<td>VBScript support?</td>
<td><%=MyBrow.vbscript%></td>
</tr><tr>
<td>JavaScript support?</td>
<td><%=MyBrow.javascript%></td>
</tr>
</table>
</body>
</html>
|
Output:
| Client OS |
WinNT |
| Web Browser |
IE |
| Browser version |
5.0 |
| Frame support? |
True |
| Table support? |
True |
| Sound support? |
True |
| Cookies support? |
True |
| VBScript support? |
True |
| JavaScript support? |
True |
The Browscap.ini File
The "Browsercap.ini" file is used to declare properties
and to set default values for
browsers.
This section is not a tutorial on how to maintain "Browsercap.ini" files,
it only shows you the basics; so you get an idea what a "Browsercap.ini" file
is all about.
The "Browsercap.ini" file can contain the following:
[;comments]
[HTTPUserAgentHeader]
[parent=browserDefinition]
[property1=value1]
[propertyN=valueN]
[Default Browser Capability Settings]
[defaultProperty1=defaultValue1]
[defaultPropertyN=defaultValueN]
|
| Parameter |
Description |
| comments |
Optional. Any line that starts with a semicolon are ignored
by the BrowserType object |
| HTTPUserAgentHeader |
Optional. Specifies the HTTP User Agent header to associate with the
browser-property value statements specified in propertyN. Wildcard
characters are allowed |
| browserDefinition |
Optional. Specifies the HTTP User Agent header-string of a browser to
use as the parent browser. The current browser's definition will inherit all
of the property values declared in the parent browser's definition |
| propertyN |
Optional. Specifies the browser properties. The following table lists some possible properties:
- ActiveXControls - Support ActiveX®
controls?
- Backgroundsounds - Support background
sounds?
- Cdf - Support Channel Definition
Format for Webcasting?
- Tables - Support tables?
- Cookies - Support cookies?
- Frames - Support frames?
- Javaapplets - Support Java applets?
- Javascript - Supports JScript?
- Vbscript - Supports VBScript?
- Browser - Specifies the name of the browser
- Beta - Is the browser beta software?
- Platform - Specifies the platform that the browser runs on
- Version - Specifies the version number of the browser
|
| valueN |
Optional. Specifies the value of propertyN. Can be a string, an integer
(prefix with #), or a Boolean value |
| defaultPropertyN |
Optional. Specifies the name of the browser property to
which to assign a default value if none of the defined HTTPUserAgentHeader
values match the HTTP User Agent header sent by the browser |
| defaultValueN |
Optional. Specifies the value of defaultPropertyN. Can be a string, an integer
(prefix with #), or a Boolean value |
A "Browsercap.ini" file might look something like this:
;IE 5.0
[IE 5.0]
browser=IE
Version=5.0
majorver=#5
minorver=#0
frames=TRUE
tables=TRUE
cookies=TRUE
backgroundsounds=TRUE
vbscript=TRUE
javascript=TRUE
javaapplets=TRUE
ActiveXControls=TRUE
beta=False
;DEFAULT BROWSER
[*]
browser=Default
frames=FALSE
tables=TRUE
cookies=FALSE
backgroundsounds=FALSE
vbscript=FALSE
javascript=FALSE
|
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