3 ms·
Double negation is used for explicit boolean conversion, i.e.: !!0 -> false !!1 -> true !!"" -> false !!"s" -> true !!null -> false !!u
by uggedal 16y ago
Double negation is used for explicit boolean conversion, i.e.:
!!0 -> false
!!1 -> true
!!"" -> false
!!"s" -> true
!!null -> false
!!undefined -> false