瞬间转换日期时间错误

Question

I'm getting time from a datepicker. I select 15th july 2016 and when I check the variable of sd it is the 15th July 2016 00:00:00 GMT After I populate the filterDataSearchFilter.startDateTime variable after the next line it's now saying 14-july-2016, rather than the 15th.

Why is this happening? Why is moment giving me "2016-07-10T12:00:00.000Z" and not "2016-07-11T12:00:00.000Z"

 goButtonSearchFilter() {
        debugger;
        if (this.filterDataSearchFilter.startDateTimeNonUtc != null) {
            var sd = this.filterDataSearchFilter.startDateTimeNonUtc.toString();
            this.filterDataSearchFilter.startDateTime = moment(this.filterDataSearchFilter.startDateTimeNonUtc).startOf('day').toISOString();
        }

Answer 1

The issues isn't with moment, it's the toISOString() which fails to consider the timezone offset. Moment already gives you start of the day but isostring offsets the timezone therefore minuses that many hours, taking the day to previous one.

Hope this helps