Quarter of year
JavaScript, Date · Oct 22, 2020

Returns the quarter and year to which the supplied date belongs to.
- Use
Date.prototype.getMonth()
to get the current month in the range (0, 11), add1
to map it to the range (1, 12). - Use
Math.ceil()
and divide the month by3
to get the current quarter. - Use
Date.prototype.getFullYear()
to get the year from the givendate
. - Omit the argument,
date
, to use the current date by default.
const quarterOfYear = (date = new Date()) => [ Math.ceil((date.getMonth() + 1) / 3), date.getFullYear() ]; quarterOfYear(new Date('07/10/2018')); // [ 3, 2018 ] quarterOfYear(); // [ 4, 2020 ]