Validate proper CSS formatting of a unit
Checks that the argument is valid for use as a CSS unit of length.
NA are returned unchanged.
Single element numeric vectors are returned as a character vector with the
number plus a suffix of
Single element character vectors must be
or a number followed by a valid suffix:
Any other value will cause an error to be thrown.
A properly formatted CSS unit of length, if possible. Otherwise, will throw an error.
validateCssUnit("10%") validateCssUnit(400) #treated as '400px'