I want to have all 90 days before today as an array. I couldn't any solution in StackOverflow or Google.
const now = new Date();
const daysBefore = now.setDate(priorDate.getDate() - 90);
My expected result is an array of 90 days before today:
const days = [
'2021-06-03T05:45:36.685Z',
'2021-06-02T05:45:36.685Z',
'2021-06-01T05:45:36.685Z',
'2021-05-30T05:45:36.685Z',
...
]
1 Answer
Create an array of dates by creating a new array of length 90 and mapping each entry to a new date that is now minus the index number of days
const now = new Date()
const length = 90
const days = Array.from({ length }, (_, days) => {
let day = new Date(now) // clone "now"
day.setDate(now.getDate() - days) // change the date
return day
})
console.log(days)This creates an array of Date instances starting with now and working back for 90 days (descending order).
See also Array.from()
