Has ToC
Function to indicate whether the current page has table of contents.
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Backgrounds
The .TableOfContents is not always empty string when there is no table of contents, it may be <nav id="TableOfContents"></nav>, and the function is used to deal with this case.
Usage
The function accepts the page variable as the context, and return a boolean value indicates whether the given page has table of contents.
1{{ if partial "base/functions/has-toc" . }}
2 {{ .TableOfContents }}
3{{ end }}