Reference Guide

facebook FBML Reference Guide Page 66 of 159

Fb:user-agent

Description

Displays the contents wrapped inside the tag to the specified user-agents. You can use fb:user-agent on the

canvas page and the profile box. It serves as a tool to deal with browser idiosyncrasies.

User-Agent Resources

http://www.user-agents.org/index.shtml - a list of common user agent strings

http://whatsmyuseragent.com/ - what is your user agent string?

Attributes

Required Name Type Description

required includes

string

A comma-delimited list of strings to test for inclusion against the HTTP

request's user-agent string. If a given include string matches the user-agent

string, the content inside the include tag appears; otherwise it does not.

optional excludes

string

A comma-delimited list of strings to test for exclusion against the HTTP

request's user-agent string. If a given include string matches the user-agent

string, the content inside the include tag does not appear; otherwise it does

appear.

Examples

<fb:user-agent includes="ie 6,ie 7">

Hi IE 6/7 users.

</fb:user-agent>

<fb:user-agent excludes="firefox">

Hi people not using Firefox.

</fb:user-agent>

<fb:user-agent includes="mozilla" excludes="firefox/2.0">

Hi Mozilla (but not Firefox 2.0) users.

</fb:user-agent>

<fb:user-agent includes="ie" excludes="ie 6">

Hi IE (but not IE 6) users.

</fb:user-agent>