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Assert that a tag has specified properties
tagAssert(tag, type = NULL, class = NULL, allowUI = TRUE)
A tag object.
The type of a tag, like "div", "a", "span".
An HTML class.
If TRUE (the default), allow dynamic outputs generated by
uiOutput
or htmlOutput
. When a
dynamic output is provided, tagAssert
won't try to validate the the
contents.