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Help:Templates: Difference between revisions
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* Adding a pipe to a template parameter <nowiki>{{{parameter}}} > {{{parameter|}}} </nowiki> will provide it with a default value (in this case, an empty string). | * Adding a pipe to a template parameter <nowiki>{{{parameter}}} > {{{parameter|}}} </nowiki> will provide it with a default value (in this case, an empty string). | ||
** This is important to remember when using the <nowiki>{{#if:}} </nowiki> parser function, since in cases where a parameter is undefined, <nowiki>{{{parameter}}}</nowiki> will return the value "true", whereas <nowiki>{{{parameter|}}}</nowiki> will return the value "false". | ** This is important to remember when using the <nowiki>{{#if:}} </nowiki> parser function, since in cases where a parameter is undefined, <nowiki>{{{parameter}}}</nowiki> will return the value "true", whereas <nowiki>{{{parameter|}}}</nowiki> will return the value "false". | ||
** It is also important to remember when a parameter is used as a value, since in cases where a parameter is undefined, <nowiki>{{{parameter}}}</nowiki> will return the value "<nowiki>{{{parameter}}}</nowiki>", whereas <nowiki>{{{parameter|}}}</nowiki> will return its default value (in this case, an empty | ** It is also important to remember when a parameter is used as a value, since in cases where a parameter is undefined, <nowiki>{{{parameter}}}</nowiki> will return the value "<nowiki>{{{parameter}}}</nowiki>", whereas <nowiki>{{{parameter|}}}</nowiki> will return its default value (in this case, an empty string). | ||
* Expr and ifeq, when evaluating numbers, produce different results. This is because expr treats numbers as floats, whereas ifeq treats them as integers. | * Expr and ifeq, when evaluating numbers, produce different results. This is because expr treats numbers as floats, whereas ifeq treats them as integers. | ||
=== Template documentation === | === Template documentation === | ||