Template:Dialog/button/1-nam/doc
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 | This is a dialog formatting template. It is meant for use on interactive dialog pages, and may involve interactions between wiki markup, HTML, and JavaScript. Please carefully test any edits before making them. |
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This is a subtemplate of {{dialog/button}}. Given the specification of a single dialog parameter for the button, it determines whether a literal value is provided for the parameter (that is, whether the spec contains a double-colon), and if so, extracts the name of the parameter for subsequent use. If no literal value is provided, the template returns the empty string. Uses {{evalx}}.