I just coded this formatter to format timestamps in javascript (I tied it to underscore for convenience), any remark?

_.toDate = function(epoch, format, locale) {    
    var date = new Date(epoch),
        format = format || 'dd/mm/YY',
        locale = locale || 'en'
        dow = {};

    dow.en = [

    var formatted = format
        .replace('D', dow[locale][date.getDay()])
        .replace('dd', ("0" + date.getDate()).slice(-2))
        .replace('mm', ("0" + (date.getMonth() + 1)).slice(-2))
        .replace('yyyy', date.getFullYear())
        .replace('yy', (''+date.getFullYear()).slice(-2))
        .replace('hh', date.getHours())
        .replace('mn', date.getMinutes());

    return formatted;


_.toDate($.now(), "dd-mm-yy at hh:mn");
// Will output:
"27-03-13 at 17:20"
  • 2
    \$\begingroup\$ I like it (except that I'll stick to some commonly used format, for instance the one php uses) \$\endgroup\$
    – Wouter J
    Mar 27, 2013 at 22:34

2 Answers 2


I would use a library that is designed for this, such as Moment.js. It is a lot more flexible, and has internationalization support also.


What happens when you add the Hungarian locale

dow.hu = [

and try to format

_.toDate(new Date(2013, 07, 30, 12, 0, 0, 0), 'D dd mm, yy', 'hu');



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