timezoneAdjust fails if date is null or undefined

[AGiorgetti]

There should be a check to test if the date we are setting is null or undefined and in that case do not try to adjust for the timezone: changing the function to something like:

$.timepicker.timezoneAdjust = function (date, toTimezone) {
        if (date) {
            var toTz = $.timepicker.timezoneOffsetNumber(toTimezone);
            if (!isNaN(toTz)) {
                var currTz = date.getTimezoneOffset() * -1,
                    diff = currTz - toTz; // difference in minutes

                date.setMinutes(date.getMinutes() + diff);
            }
        }
        return date;
    };

was enough for my case. The problem arose when using a framework that supports two way data-binding like Knockoutjs or Angularjs.

Thanks for your great work, this control has been very helpful for me! Alessandro

[lgBatista]

I've the same problem, but i'm using two inputs together for the date controler with this solution, despite that the error not appear, the value of the first input disapears. What I can do about that ?