let dt = new Date('2013-03-10T02:00:00Z');
let dd = dt.getDate();
let mm = dt.getMonth() + 1;
let yyyy = dt.getFullYear();
if (dd<10) {
dd = '0' + dd;
}
if (mm<10) {
mm = '0' + mm;
}
return yyyy + '-' + mm + '-' + dd;
let isoDate = "2013-03-10T02:00:00Z";
var d = new Date(isoDate);
d.toLocaleDateString('en-GB'); // dd/mm/yyyy
d.toLocaleDateString('en-US'); // mm/dd/yyyy
it('return correct day even if timezone is included', () => {
// assuming the test is running in EDT timezone
// 11:34pm eastern time would be the next day in GMT
let result = adjustDateToLocalTimeZoneDayString(new Date('Wed Apr 06 2022 23:34:17 GMT-0400'));
// Note: This is probably what a person wants, the date in the current timezone
expect(result).toEqual('2022-04-06');
// 11:34pm zulu time should be the same
result = adjustDateToLocalTimeZoneDayString(new Date('Wed Apr 06 2022 23:34:17 GMT-0000'));
expect(result).toEqual('2022-04-06');
result = adjustDateToLocalTimeZoneDayString(undefined);
expect(result).toBeUndefined();
});
it('demonstrates how the simple ISOString().split() may be misleading', () => {
// Note this is the 7th
expect(new Date('Wed Apr 06 2022 23:34:17 GMT-0400').toISOString().split('T')[0]).toEqual('2022-04-07');
});