Find next instance of a given weekday (ie. Monday) with moment.js

Question

I want to get the date of the next Monday or Thursday (or today if it is Mon or Thurs). As Moment.js works within the bounds of a Sunday - Saturday, I\'m having to work out

Answer 1

The idea is similar to the one of XML, but avoids the if / else statement by simply adding the missing days to the current day.

const desiredWeekday = 4; // Thursday
const currentWeekday = moment().isoWeekday();
const missingDays = ((desiredWeekday - currentWeekday) + 7) % 7;
const nextThursday = moment().add(missingDays, "days");

We only go "to the future" by ensuring that the days added are between 0 and 6.