no-value.md

No Values

A no value is any of the following (case insensitive):

• no
• 0
• false
• off
• disabled
• ignored
• whatever means "no" in your content language

Why use no values

The problem with the "just be present and I'll react to you" attributes is, that you cant disable them, once you put them in. In other words, if you want to make a card collapsible depending on the result of another parser function, you now can have your parser function return a no value.

Example

<!-- this does not work: -->
<bootstrap_card {{#if:{{{1|}}}|collapsible|}}>Content text for the panel</bootstrap_card>

<!-- this does: -->
<bootstrap_card collapsible="{{#if:{{{1|}}}|yes|no}}">Content text for the panel</bootstrap_card>