How to transform the correct date in JS?

Question

JavaScript

Hello! Tell me how to correctly write the date in cookies so that it turns out for 1 day, now this entry is not very clear to me (var ms = days*24*60*60*1000;) and for what period of time does it work!?

function setDefaultCookieExpire(days) {
    // transform days to milliseconds
    var ms = days*24*60*60*1000;

    var date = new Date();
    date.setTime(date.getTime() + ms);

    return "; expires=" + date.toUTCString();
  }

Answer 1

Дни * Часы * Минуты * Секунды * Миллисекунды. And the number of days you have as a parameter comes.

Answer 2

Recording

days*24*60*60*1000

converts number of days to milliseconds.
It is valid for the number of days specified when calling the function.