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.

{{demo|<nowiki>{{your template}}</nowiki>}}

IMPORTANT: You must wrap <nowiki>...</nowiki> tags around the source to be demonstrated (or use {{escape}}, which has a demo-escape example), like so: {{demo|<nowiki>[template source]</nowiki>}}

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

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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}}

 Done

Separator

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

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

produces  Done

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

{{done}}
 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

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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

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

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

produces:


Module

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If the template used is based on Lua, you can pass args 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

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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


No description.

Template parameters

ParameterDescriptionTypeStatus
Content1

must be wrapped in <nowiki>

Unknownoptional
sepsep

Number of line breaks, or wikitext to fill in as the linebreak

Unknownoptional
nocatnocat demo_kill_categories

no description

Booleanoptional
result_argresult_arg

no description

Unknownoptional
<syntaxhighlight> stylestyle

no description

Unknownoptional
Reverse orderreverse

Show the code snippet and the result in reverse order

Default
0
Auto value
1
Booleanoptional

See also

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Other formatting templates

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Templates producing specialised formatting effects for given templates, modules or parameters
Code example Effect Notes
{{Tj|Hatnote|Some text|selfref: yes|category: no|lang: fr}}
{{Hatnote
| Some text
| selfref = yes
| category = no
| lang = fr
}}
Supports colors, placeholder texts, named and unnamed parameters
<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
{{Tji|Hatnote|Some text|selfref: yes|category: no|lang: fr}} {{Hatnote|Some text|selfref=yes|category=no|lang=fr}} Supports colors, placeholder texts, named and unnamed parameters
<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|lang=fr|Some text}}</nowiki>}}
{{hatnote|lang=fr|Some text}}
Shows code and example
{{tln|Hatnote}} Template:Hatnote Produces a normal link to the template
{{elc|Template:Hatnote}}
{{elc|Template:Hatnote|Hatnote}}
[[Template:Hatnote]]
[[Template:Hatnote|Hatnote]]
Formats wikilink, with optional piped link text and blended 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}}
{{pf|if}}
{{pf|if|{{{1}}}|true|false}}
{{#if}}
{{#if:{{{1}}}|true|false}}
Parser function equivalent to {{tl}}
{{magic word|uc:}} {{uc:}} Magic word links