Editing Template:Infobox/doc (section)

=== Main data ===
; header(n) : Text to use as a header in row n.
; label(n) : Text to use as a label in row n.
; data(n) : Text to display as data in row n.

Note: for any given value for (n), not all combinations of parameters are permitted. The presence of a {{para|header''(n)''}} will cause the corresponding {{para|data''(n)''}} (and {{para|rowclass''(n)''}} {{para|label''(n)''}}, see below) to be ignored; the absence of a {{para|data''(n)''}} will cause the corresponding {{para|label''(n)''}} to be ignored. Valid combinations for any single row are:

* {{para|class''(n)''}} {{para|header''(n)''}}
* {{para|rowclass''(n)''}} {{para|class''(n)''}} {{para|data''(n)''}}
* {{para|rowclass''(n)''}} {{para|label''(n)''}} {{para|class''(n)''}} {{para|data''(n)''}}

See the rendering of header4, label4, and data4 in the [[#Examples|Examples]] section below.

==== Number ranges ====
To allow flexibility when the layout of an infobox is changed, it may be helpful when developing an infobox to use non-contiguous numbers for header and label/data rows. Parameters for new rows can then be inserted in future without having to renumber existing parameters. For example:

<syntaxhighlight lang="wikitext" style="overflow: auto;">
 | header3  = Section 1
 |  label5  = Label A
 |   data5  = Data A
 |  label7  = Label C
 |   data7  = Data C
 | header10 = Section 2
 |  label12 = Label D
 |   data12 = Data D
</syntaxhighlight>
{{clear}}

It is also possible to automatically renumber parameter names by using [[User:Frietjes/infoboxgap.js]] or [[Module:IncrementParams]].

There is no upper limit on numbers but there must be at most 50 between each used number.

==== Making data fields optional ====
A row with a label but no data is not displayed. This allows for the easy creation of optional infobox content rows. To make a row optional use a parameter that defaults to an empty string, like so:

<syntaxhighlight lang="wikitext" style="overflow: auto;">
 | label5 = Population
 |  data5 = {{{population|}}}
</syntaxhighlight>
{{clear}}

This way if an article doesn't define the population parameter in its infobox the row won't be displayed.

For more complex fields with pre-formatted contents that would still be present even if the parameter wasn't set, you can wrap it all in an "#if" statement to make the whole thing vanish when the parameter is not used. For instance, the "#if" statement in the following example reads "#if:the parameter ''mass'' has been supplied |then display it, followed by 'kg'":

<syntaxhighlight lang="wikitext" style="overflow: auto;">
 | label6 = Mass
 |  data6 = {{ #if: {{{mass|}}} | {{{mass}}} kg }}
</syntaxhighlight>
{{clear}}

For more on #if, see [[meta:ParserFunctions##if:|here]].

==== Hiding headers when all its data fields are empty ====
You can also make headers automatically hide when their section is empty (has no data-row showing).

Consider this situation:
{{Infobox
 | title   = Example: header with & without data
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = Header5 with data below
 |  label6 = label6 text |  data6 = Some value
}}
<syntaxhighlight lang="wikitext" style="overflow: auto;">
{{Infobox
 | title   = Example: header with & without data
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = Header5 with data below
 |  label6 = label6 text |   data6 = Some value
}}
</syntaxhighlight>
{{clear}}

If you want hide the header when no {{para|data''N''}} values are present, use {{para|autoheaders|y}}:

{{Infobox
 | title   = Example: header with & without data
 | autoheaders = y
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = Header5 with data below
 |  label6 = label6 text |  data6 = Some value
}}

<syntaxhighlight lang="wikitext" style="overflow: auto;">
{{Infobox
 | title   = Example: header with & without data
 | autoheaders = y
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = Header5 with data below
 |  label6 = label6 text |  data6 = Some value
}}
</syntaxhighlight>
{{clear}}

So, header1 will be shown if any of item1, item2, or item3 is defined. If none of the three parameters are defined the header won't be shown and no empty row appears before the next visible content.

Note: if the data has empty css elements, like {{para|data|2=&lt;span style="background:yellow;">&lt;/span>}}, this will be treated as non-empty (having data).

If {{para|autoheaders|y}} but there are items that you {{em|do not}} want to trigger a header, place {{para|headerX|_BLANK_}}. This will serve as an empty header and separate it from the subsequent items.

{{Infobox
 | title   = Example: blank header with & without data
 | autoheaders = y
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = _BLANK_
 |  label6 = label6 text |  data6 = Some value, but does not trigger header1 or show header5
}}

<syntaxhighlight lang="wikitext" style="overflow: auto;">
{{Infobox
 | title   = Example: header with & without data
 | autoheaders = y
 | headerstyle = background: lightgrey

 | header1 = Header1 with empty section
 |  label2 = label2 text |  data2 =
 |  label3 = label3 text |  data3 =
 |  label4 = label4 text |  data4 =

 | header5 = _BLANK_
 |  label6 = label6 text |  data6 = Some value, but does not trigger header1 or show header5
}}
</syntaxhighlight>
{{clear}}