查看“︁模板:Yesno/doc”︁的源代码

This template normalises an input to be a yes/no output.

=== Usage ===

The template has five possible outputs depending on the default parameter (input if you will).

In its simplest usage these will all be either "yes" or "" (blank - nothing no characters). 

# <tt><nowiki>{{yesno|yes}}</nowiki></tt>  result "yes"  (also applies to "Yes", "YeS", etc, "Y", "y" and "1")   
# <tt><nowiki>{{yesno|no}}</nowiki></tt> result "" (also applies to "No", "NO", "nO", "N", "n" and "0") 
# <tt><nowiki>{{yesno}}</nowiki></tt> result "" 
# <tt><nowiki>{{yesno|¬}}</nowiki></tt> result ""
# <tt><nowiki>{{yesno|purplemonkeydishwasher}}</nowiki></tt> result "yes" (also applies to any other value not given above).


Each of these can be over-ridden.

# <tt><nowiki>{{yesno|yes|yes=bacon}}</nowiki></tt>  result "bacon"  (also applies to "Yes", "YeS", etc, "Y", "y" and "1")   
# <tt><nowiki>{{yesno|no|no=ham}}</nowiki></tt> result "ham" (also applies to "No", "NO", "nO", "N", "n" and "0") 
# <tt><nowiki>{{yesno|blank= eggs}}</nowiki></tt> result "eggs" 
## but <tt><nowiki>{{yesno|no=ham}}</nowiki></tt> result "ham" 
## and <tt><nowiki>{{yesno|blank= eggs|no=ham}}</nowiki></tt> result "eggs" 
# <tt><nowiki>{{yesno|¬|¬=sausage}}</nowiki></tt> result "sausage"
# <tt><nowiki>{{yesno|purplemonkeydishwasher|def=cup-of-tea}}</nowiki></tt> result "cup-of-tea" (also applies to any other value not given above).
## but <tt><nowiki>{{yesno|purplemonkeydishwasher|yes=bacon}}</nowiki></tt> result "bacon" 
## but <tt><nowiki>{{yesno|purplemonkeydishwasher|def=cup-of-tea|yes=bacon}}</nowiki></tt> result "cup-of-tea" 

This may be used (apparently perversely) thus:

* <tt><nowiki>{{yesno|yes|yes=no|no=yes}}</nowiki></tt>  result "no"
* <tt><nowiki>{{yesno|no|yes=no|no=yes}}</nowiki></tt>  result "yes"

This creates a logical inversion.