Help:Tables

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Revision as of 10:29, 12 December 2008

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Tables may be authored in wiki pages using either HTML table elements directly, or using wikicode formatting to define the table. HTML table elements and their use are well described on various web pages and will not be discussed here. The benefit of wikicode is that the table is constructed of character symbols which tend to make it easier to perceive the table structure in the article editing view compared to HTML table elements.

As a general rule, it is best to avoid using a table unless you need one. Table markup often complicates page editing.

Wiki table markup summary

• The above marks must start on a new line except the double || and !! for optionally adding consecutive cells to a line.
• XHTML attributes. Each mark, except table end, optionally accepts one or more XHTML attributes. Attributes must be on the same line as the mark. Separate attributes from each other with a single space.
  • Cells and caption (| or ||, ! or !!, and |+) hold content. So separate any attributes from content with a single pipe (|). Cell content may follow on same line or on following lines.
  • Table and row marks ({| and |-) do not directly hold content. Do not add pipe (|) after their optional attributes. If you erroneously add a pipe after attributes for the table mark or row mark the parser will delete it and your final attribute if it was touching the erroneous pipe!
• Content may (a) follow its cell mark on the same line after any optional XHTML attributes or (b) on lines below the cell mark. Content that uses wiki markup that itself needs to start on a new line, such as lists, headers, or nested tables, must of course be on its own new line.

Simple table

Plain

The following table lacks borders and good spacing but shows the simplest wiki markup table structure

{|
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Alternative

For more table-ish looking wiki markup cells can be listed on one line separated by ||. This does not scale well for longer cell content such as paragraphs. It works well for short bits of content however, such as our example table.

Extra spaces within cells in the wiki markup can be added, as I have done in the wiki markup below, to make the wiki markup itself look better but they do not affect the actual table rendering.

HTML attributes can be added to tables on this page but have been left out of the following example for simplicity.

{|
|  Orange    ||   Apple   ||   more
|-
|   Bread    ||   Pie     ||   more
|-
|   Butter   || Ice cream ||  and more
|}

With HTML attributes

You can add HTML attributes to make your table look better

border="1"

{| border="1"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

align="center" border="1"

{| align="center" border="1"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Attributes on cells

You can put attributes on individual cells. Numbers for example may look better aligned right

{| border="1"
|Orange
|Apple
|align="right"|12,333.00
|-
|Bread
|Pie
|align="right"|500.00
|-
|Butter
|Ice cream
|align="right"|1.00
|}

Attributes on rows

You can put attributes on individual rows, too.

{| border="1"
|Orange
|Apple
|align="right"|12,333.00
|-
|Bread
|Pie
|align="right"|500.00
|- style="font-style:italic;color:green;"
|Butter
|Ice cream
|align="right"|1.00
|}

cellspacing="0" border="1"

{| cellspacing="0" border="1"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

cellpadding="20" cellspacing="0" border="1"

{| cellpadding="20" cellspacing="0" border="1"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

cellpadding="20" cellspacing="0" border="1" width="100%"

{| cellpadding="20" cellspacing="0" border="1" width="100%"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

With HTML attributes and CSS styles

CSS style attributes can be added with or without other HTML attributes

style="color:green;background-color:#ffffcc;" cellpadding="20" cellspacing="0" border="1"

{| style="color:green;background-color:#ffffcc;" 
cellpadding="20" cellspacing="0" border="1"
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Table with TH headings

TH (HTML table headings) can be created by using ! instead of |. Headings usually show up bold and centered by default.

Top headings

Each column

{| border="1" cellpadding="20" cellspacing="0"
!Yummy
!Yummier
|-
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Colspan="2"

{| border="1" cellpadding="20" cellspacing="0"
! colspan="2"|Yummies
|-
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Side headings

Default

{| border="1" cellpadding="20" cellspacing="0"
!Fruit
|Orange
|Apple
|-
!Dish
|Bread
|Pie
|-
!Complement
|Butter
|Ice cream 
|}

Right justify

Right justified side headings can be done as follows

{| border="1" cellpadding="20" cellspacing="0"
!align="right" |Fruit
|Orange
|Apple
|-
!align="right" |Dish
|Bread
|Pie
|-
!align="right" |Complement
|Butter
|Ice cream 
|}

Caption

A table caption can be added to the top of any table as follows

{| border="1" cellpadding="20" cellspacing="0"
|+Food complements
|-
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Attributes can be added to the caption as follows

{| border="1" cellpadding="20" cellspacing="0"
|+align="bottom" style="color:#e76700;"|''Food complements''
|-
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Table with H1, H2, H3 etc. headings

HTML H1, H2, H3, H4 etc. headings can be created the standard wiki markup way with ==equal== signs and must be on a line all by themselves to work.

Preview the whole table. If you click on an edit tab for a heading within a table, edit, and preview, the parent table will display erroneously broken because part of it will be missing.

Keep the heading hierarchy consistent with the rest of the page so that the table of contents at page top works correctly.

{| border="3"  cellpadding="20" cellspacing="0"
|colspan="2"|
===Yummiest===
|-
|Orange
|Apple
|-
|Bread
|Pie
|-
|Butter
|Ice cream 
|}

Caveat

Negative numbers

Negative value minus sign can break your table (it may display missing some values) if you start a cell on a new line with a negative number or a parameter that evaluates to a negative number (|-6) because that is the wiki markup for table row, not table cell. To avoid this, insert a space before the value (| -6) or use in-line cell markup (||-6).