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2025-12-17T04:13:41Z

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The template returns a ''state of error'', and optionally an ''error-message text'' in red (visible for the user).

== Usage ==

The parameter {{p|1}} can be set to the error to display when using this template.

* {{tl|error|An exemplary error}} → {{error|An exemplary error}}
* Compare, used in a Parser Function: <code>{{<nowiki/>#expr:Foo}}</code> → {{#expr:Foo}}
If {{p|1}} is unset, no error will be displayed, although it still can be detected by [[##iferror|<code>{{<nowiki/>#iferror:}}</code>]]
* {{tl|error}} → {{error}}

=== #iferror ===

The error displayed is detected by the parser function <code>{{<nowiki/>#iferror:}}</code>.

* <code><nowiki>{{#iferror: {{error|Foo}} | {{c|yes}} | {{c|no}} }}</nowiki></code> → {{#iferror:{{error|Foo}} | {{c|yes}} | {{c|no}} }}
* <code><nowiki>{{#iferror: {{error}} | {{c|yes}} | {{c|no}} }}</nowiki></code> → {{#iferror:{{error}} | {{c|yes}} | {{c|no}} }}

=== Tag option ===

The tag to contain the error message can be given through the {{p|tag}} parameter, but it will only accept <code>span</code>, <code>div</code>, <code>p</code>, and <code>strong</code>, since those are the only tags recognized by the <code>{{<nowiki/>#iferror:}}</code> parser function. It defaults to <code>strong</code>, the tag generated by most parsers, e.g. by <code>{{<nowiki/>#expr:}}</code>.

{| class = "wikitable"
! Code
! Result
|-
| ABC {{tl|error|An exemplary error demo no tag (default)}} XYZ
| ABC {{error|An exemplary error demo no tag (default)}} XYZ
|-
| ABC {{tl|error|An exemplary error demo span|tag{{=}}span}} XYZ
| ABC {{error|An exemplary error demo span|tag=span}} XYZ
|-
| ABC {{tl|error|An exemplary error demo div|tag{{=}}div}} XYZ
| ABC {{error|An exemplary error demo div|tag=div}} XYZ
|-
| ABC {{tl|error|An exemplary error demo p|tag{{=}}p}} XYZ
| ABC {{error|An exemplary error demo p|tag=p}} XYZ
|-
| ABC {{tl|error|An exemplary error demo strong|tag{{=}}strong}} XYZ
| ABC {{error|An exemplary error demo strong|tag=strong}} XYZ
|}

=== See also ===
* [[mw:Help:Extension:ParserFunctions##iferror]]

<includeonly>
[[Category:Meta templates]]

[[cs:Šablona:Error]]
[[fr:Modèle:Erreur]]
[[it:Template:Errore]]
[[ja:テンプレート:Error]]
[[ko:틀:Error]]
[[lzh:模板:Error]]
[[pt:Predefinição:Erro]]
[[ru:Шаблон:Error]]
[[th:แม่แบบ:Error]]
[[uk:Шаблон:Error]]
[[zh:Template:Error]]
</includeonly>
<noinclude>
[[cs:Šablona:Error/doc]]
[[fr:Modèle:Erreur/doc]]
[[it:Template:Errore/doc]]
[[ja:テンプレート:Error/doc]]
[[ko:틀:Error/doc]]
[[lzh:模板:Error/doc]]
[[pt:Predefinição:Erro/doc]]
[[ru:Шаблон:Error/док]]
[[th:แม่แบบ:Error/doc]]
[[uk:Шаблон:Error/док]]
[[zh:Template:Error/doc]]
</noinclude>

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imported>Ja17: ko interwiki