How to add 30 minutes to a JavaScript Date object?

Question

I\'d like to get a Date object which is 30 minutes later than another Date object. How do I do it with JavaScript?

Answer 1

This is what I do which seems to work quite well:

Date.prototype.addMinutes = function(minutes) {
    var copiedDate = new Date(this.getTime());
    return new Date(copiedDate.getTime() + minutes * 60000);
}

Then you can just call this like this:

var now = new Date();
console.log(now.addMinutes(50));