How do I subtract minutes from a date in javascript?

Question

How can I translate this pseudo code into working js [don\'t worry about where the end date comes from except that it\'s a valid javascript date].

var myEndD         


        

Answer 1

You can also use get and set minutes to achieve it:

var endDate = somedate;

var startdate = new Date(endDate);

var durationInMinutes = 20;

startdate.setMinutes(endDate.getMinutes() - durationInMinutes);