Collapsible tables are an alternative to Wikipedia:NavFrames they're easier to use and implement, but are not accessibility friendly due to their inherit table nature. Code is found in the MediaWiki:Common.js and is actively maintained by User:R. Koot.
The initial state of any collapsible content can be controlled using a "collapsible table", because it also allows a table with only one element with content, and a header.
Simple example
Tables are simpler to work with, as you merely need to add the collapsible to the table itself. For the [hide]/[show] link to appear, the table's first row must be a header row, i.e. begin (in wikisyntax) with an exclamation mark. The use of the class toccolours in the example below is merely for appearance; it is not needed for collapsible to function:
{| class="toccolours collapsible" width="60%"
!colspan="2"| Fun with table columns
|-
| Column 1 || Column 2
|}
Fun with table columns
Column 1
Column 2
One-element example, initially expanded:
Always displayed header
Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text
Auto-collapsing tables
You have two choices of auto-collapse. In addition to the collapsible class, you can add either collapsed or autocollapse. The first always initially collapses a table. autocollapse only initially collapses a table if there are at least two collapsible tables on a page.
{| class="toccolours collapsible autocollapse" width=60%
|-
! colspan="2" | This autocollapse table will initially collapse because there are at least two collapsible tables on this page.
|-
| Column 1 || Column 2
|}
This autocollapse table will initially collapse because there are at least two collapsible tables on this page.
Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text Optionally displayed text
