Basics
tagQuery() accepts an element or list of elements
as input and returns a data structure containing:
$allTags(): All elements.$selectedTags(): Selected/transformed tags.
Defults to $allTags().
tag_query <- tagQuery(div(p()))
class(tag_query)
[1] "shiny.tag.query"
`$allTags()`:
<div>
<p></p>
</div>
`$selectedTags()`: `$allTags()`