Moment.js .isBefore 将日期与时区偏移量进行比较

Question

The two moments that need to be compared are:

1. today now in a certain time zone (Wed Oct 12 2016 08:42:19 GMT+0000)

2. A selected date from a calendar (eg 2016-10-11)

   Here is how I am working it:

 var date = '2016/10/12'; // october 11 var offset = '0'; // time zone offset in minutes, 0 = GMT var dateToday = moment().utcOffset(offset); // get a moment now with the time zone offset var selectedDate = moment(date, ["YYYY-MM-DD"]).utcOffset(offset); // and a moment that is the date of the day selected alert(dateToday); alert(selectedDate); if (selectedDate.isBefore(dateToday, 'day')) { alert('That date is in the past!'); } else { alert('Great!'); }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://momentjs.com/downloads/moment.js"></script>

The problem appears to be that because I am in Paris time (+02:00) any offset that I select below Paris time(+02:00) for example GMT (+00:00) then that sets the select date -1 day in the past at 10:00PM.

So my question is how do I correctly check to see if a date (2016-10-12 GMT) is in the past?

UPDATE:

I have solved it for now by extracting the date, regardless of timezone, using the format function. Then I created brand new moments passing the date strings explicitly into those moments like this:

 var dateToday = moment().utcOffset(offset); // get a moment now with the time zone offset var selectedDate = moment(date, ['YYYY-MM-DD']); // and a moment that is the date of the day selected var dateToday = dateToday.format('YYYY-MM-DD'); var selectedDate = selectedDate.format('YYYY-MM-DD'); var dateToday = moment(dateToday, ['YYYY-MM-DD']); var selectedDate = moment(selectedDate, ['YYYY-MM-DD']);

Answer 1

What about setting the selectedDate hours and minutes 00:00 or assigning an offset to it ?

var date = new Date();
var offset = date.getTimezoneOffset() * (-1)
selectedDate.add(offset, "hours");