How to get timestamp of last Friday using JavaScript?

Question

I have to get the timestamp of last Friday, but I am not sure how can I get timestamp using weekday. Can someone please help?

What I trying to get is difference between last Friday and Today.

var now = new Date();
var time = now.getTime();
var fridayTime = new Date(now.getFullYear(), now.getMonth(), now.getDate(), 13, 30, 00);
var timeDiff = time - fridayTime;

I know I have not written the correct code for "fridayTime", but not sure what is the correct code.

Answer 1

const t = new Date().getDate() + (6 - new Date().getDay() - 1) - 7 ;
const lastFriday = new Date();
lastFriday.setDate(t);
console.log(lastFriday);