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This template simply places template code (or any other code) in a <syntaxhighlight lang="wikitext">...</syntaxhighlight> tag and then places the rendering of that code below it.

Usage

The template's skeleton is:

{{demo|<nowiki>{{your template}}</nowiki>}}
Template call
(m for magic word)
Output (delayed interpretation as wikimarkup) HTML alternative (never interpreted as wikimarkup)
{{!}} (m) | &#124; or {{pipe}}
{{=}} (m) = &#61;
{{!!}} || &#124;&#124;
{{!(}} [ &#91;
{{)!}} ] &#93;
{{!((}} [[ &#91;&#91;
{{))!}} ]] &#93;&#93;
{{(}} { &#123;
{{)}} } &#125;
{{((}} {{ &#123;&#123;
{{))}} }} &#125;&#125;
{{(((}} {{{ &#123;&#123;&#123;
{{)))}} }}} &#125;&#125;&#125;
{{(!}} {| &#123;&#124;
{{!+}} |+ &#124;&#43;
{{!-}} |- &#124;&#45;
{{!)}} |} &#124;&#125;

Template:Warning

Failure to wrap <nowiki>...</nowiki> tags around the source may cause the source to be executed before it reaches this template. {{demo|{{fail}}}} produces:

<big style="color:#DF0A24; font-size:1.4em;">&#x2717;</big>&nbsp;'''Fail'''

✗ Fail

Pre style

Set |style= to add any CSS text to the <pre>...</pre> tag.

For example, {{demo|style=margin-left: 1.6em;|<nowiki>{{done}}</nowiki>}} will produce:

{{done}}

File:Yes check.svg Done

Separator

You can change the separator between the <syntaxhighlight> and the template by setting the |sep= parameter.

{{demo|sep=produces|<nowiki>{{done}}</nowiki>}}
{{done}}

produces File:Yes check.svg Done

You may use |sep=<td> can make the demonstration fit in a table:

{{done}}
File:Yes check.svg Done

Instead of using |sep=, you can also specify the number of line breaks between the code and the template in the |br= parameter.

Reverse order

Use |reverse=1 to show the code snippet and the result in reverse order:

{{demo|reverse=1|<nowiki>{{tl|template}}</nowiki>}}

will produce

{{template}}

{{tl|template}}

Category removal

For templates that add categories (e.g. {{Article stub box}}), set |nocat= (or |demo_kill_categories=) to anything to prevent them from showing up in the output:

{{Article stub box
| image = Østfold_våpen.svg
| pix = 30
| subject = [[Østfold]] location
| name = Template:Østfold-geo-stub
| category = Østfold geography stubs
| tempsort = *
}}

produces:

Module

If the template used is based on Lua, args can be passed directly to the demonstrated module by invoking Module:Demo like so: (this would reduce server stress)

{{#invoke:Demo|module|demo_module=RoundN|demo_module_func=N2|demo_template=Round2
|bold_winner=high
|May 1|Team A|1|Team B|2
}}
{{Round2
|bold_winner=high
|May 1|Team A|1|Team B|2
}}
 
Final
 
  
 
May 1
 
 
Team A1
 
 
Team B2
 

Note: It will attempt to preserve line breaks for unnamed params, but such is impossible for named params since those are stripped of whitespace/order before being passed to the module. Also note, you should use |demo_sep= instead of |sep= (all args you don't want being passed should be prefixed with demo_ if not already)

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Demo in articles based on its TemplateData.

TemplateData for Demo

This template takes wikitext and displays it in syntax highlighting and displays the rendering of the wikitext below.

Template parameters

ParameterDescriptionTypeStatus
Content1

must be wrapped in <nowiki>

Example
<nowiki>{{citation needed}}</nowiki>
Contentoptional
Separatorsep

Wikitext to fill in as the linebreak

Example
produces:
Contentoptional
No categoriesnocat demo_kill_categories

Prevent categories from showing up in the output

Booleanoptional
result_argresult_arg

no description

Unknownoptional
<syntaxhighlight> stylestyle

CSS styling for the code

Example
margin-left: 1.6em;
Stringoptional
Reverse orderreverse

Show the code snippet and the result in reverse order

Default
0
Auto value
1
Booleanoptional
Number of line breaksbr

Produce this number of line breaks.

Default
1
Numberoptional

See also

Other formatting templates

Templates producing specialised formatting effects for given templates, modules or parameters
Code example Effect Notes
<syntaxhighlight lang="wikitext">
{{Hatnote
   | Some text
   | selfref = yes
   | category = no
   | lang = fr
}}
</syntaxhighlight>
{{Hatnote
    | Some text
    | selfref = yes
    | category = no
    | lang = fr
}}
Same as above
<syntaxhighlight lang="wikitext" inline>
{{Hatnote |Some text |selfref=yes |category=no |lang=fr}}
</syntaxhighlight>
{{Hatnote|Some text|selfref=yes|category=no|lang=fr}} Same as above
{{tl2|Hatnote|lang=fr}} {{hatnote}} Supports linking to sister projects (e.g., fr:Hatnote)
{{demo|<nowiki>{{Hatnote|Some text}}</nowiki>}}
{{hatnote|Some text}}
Shows code and example
{{tln|Hatnote}} Template:Hatnote Produces a normal link to the template
{{elc|Template:Example}}
{{elc|Template:Example|Text|suffix}}
[[Template:Example]]
[[Template:Example|Text]]suffix
Shows how wikilink would be entered in wiki markup, with optional link text and suffix
{{ml|Example|hello}} {{#invoke:Example|hello}} Counterpart to {{tl}} for linking to Lua modules
{{mfl|Example|hello}} {{#invoke:Example|hello}} Similar to {{ml}}, but expects the function to be documented and creates a link to the corresponding section
{{mlx|Example|hello}} {{#invoke:Example|hello}} Counterpart to {{tlx}} for linking to Lua modules
{{ml-lua|Module:Example}} require('Module:Example') Link to Lua modules and built-in libraries, showing Lua code.
{{para|title|<var>book title</var>}} |title=book title Formats template parameters for display, with or without values
{{sclx|LASTING}} [[WP:LASTING]] Takes a shortcut suffix in project namespace and displays it with brackets and the WP: alias in a <code>...</code> tag.
{{tag|ref}}
{{xtag|templatedata}}
<ref>...</ref>
<templatedata>
Formats [X]HTML tags; can add content, choose opening, closing, or self-closing
{{dtl|Ping project}} {{d:Ping project}} Wikidata counterpart to {{tl}}
{{mwl|#if}}
{{mwl|#if|{{{1}}}|true|false}}
{{#if}}
{{#if:{{{1}}}|true|false}}
Magic word links
{{pf|if}}
{{pf|if|{{{1}}}|true|false}}
{{#if}}
{{#if:{{{1}}}|true|false}}
Parser function equivalent to {{tl}}