How to reference a key from the same object when creating it?

Question

Say I have an object such as this:

var time = {
    \'second\': 1000,
    \'minute\': 1000 * 60,
    \'hour\'  : 1000 * 60 * 60,
    \'day\'   : 1000 * 60 *          


        

Answer 1

var time = (function(){
    var second = 1000,
        minute = second * 60,
        hour = minute * 60,
        day = hour * 24,
        week = day * 7;
    return {
        'second': second,
        'minute': minute,
        'hour'  : hour,
        'day'   : day,
        'week'  : week
    };
})();

UPD

Even shorter:

var time = (function(){
    var w, d, h, m, s;
    w = (d = (h = (m = (s = 1000) * 60) * 60) * 24) * 7;
    return {
        second: s,
        minute: m,
        hour  : h,
        day   : d,
        week  : w
    };
})();

And finally the minified version of this:

var time=function(){var a,b,c,d,e;a=(b=(c=(d=(e=1e3)*60)*60)*24)*7;return{second:e,minute:d,hour:c,day:b,week:a}}()