Let’s say my application fetches dates from the server which come back in
string form as
"YYYY-MM-DD" and I’d like to know if those dates already
passed. This can be done easily by wrapping dates in
DayJS and using its comparison functions.
import dayjs from 'dayjs'; const today = dayjs(new Date()); const pastDate = dayjs("2018-10-22"); const futureDate = dayjs("2022-01-01"); console.log(pastDate.isBefore(today)); // => true console.log(futureDate.isBefore(today)); // => false
dayjs() function can be used to construct DayJS date objects from Date
objects and strings. These can then be compared with functions like