validateCssUnit
From shiny v0.12.2
by Winston Chang
Validate proper CSS formatting of a unit
Checks that the argument is valid for use as a CSS unit of length.
Usage
validateCssUnit(x)
Arguments
- x
- The unit to validate. Will be treated as a number of pixels if a unit is not specified.
Details
NULL
and NA
are returned unchanged.
Single element numeric vectors are returned as a character vector with the
number plus a suffix of "px"
.
Single element character vectors must be "auto"
or "inherit"
,
or a number. If the number has a suffix, it must be valid: px
,
%
, em
, pt
, in
, cm
, mm
, ex
,
or pc
. If the number has no suffix, the suffix "px"
is
appended.
Any other value will cause an error to be thrown.
Value
- A properly formatted CSS unit of length, if possible. Otherwise, will throw an error.
Examples
validateCssUnit("10%")
validateCssUnit(400) #treated as '400px'
Community examples
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