JavaScript for getting the previous Monday

Question

I would like for the previous Monday to appear in the field where a user enters today\'s date.

E.g.: If today\'s date is entered 29-Jan-16 t

Answer 1

Based on @Philippe Dubé-Tremblay answer, i wanted to come up with something that lets you target any previous day:

let target = 1 // Monday
let date = new Date()
date.setDate(date.getDate() - ( date.getDay() == target ? 7 : (date.getDay() + (7 - target)) % 7 ))

This takes into account the previous Monday if today is also Monday