is.date() returns true when instance of date is Invalid date
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In project I have some helpers for preparing user data, which i've get from server. Server does respond with some information about user: firstName, lastName, date, etc.
I've try to format date string with new Date()
and check it by is.date(instanceOfDate)
.
Sometimes server does respond with undefined
and is.date(new Date(undefined))
returns true, but new Date (undefined)
returns Invalid Date.
I know that i can check initial value for undefined
, but in this case It's logical that function would return false instead of true. When i got date: null
— its all ok.
Hi @Forshortmrmeth!
is.date
does not return true
for is.date(undefined)
. The is.date
method is a value kind checker. An invalid date is still a date value just as NaN
and Infinity
are number values.
@Forshortmrmeth try to use
const isCorrectDate = new Date(undefined).toString() !== "Invalid Date";