isUndefined()
Determines if the given value is undefined
as specified by typeOf()
.
undefined
according to typeOf()
.true
if value
is undefined
according to typeOf()
. Otherwise false
.This function directly requires the following function which is included automatically:
isArguments()
Arguments
as specified by typeOf()
.
This function is directly required by the following function:
isArguments()
Arguments
as specified by typeOf()
.