As per my requirement if I pass the date-time then, How I can find which date is present on last week?
E.g.
var date1 = new GlideDateTime('2021-10-06 09:00:24');
var date2 = new GlideDateTime('2021-10-12 09:00:37');
Output:-
date 1 is present on last week.
You could use this function comparing the numbers of the weeks :
function isLastWeek(gdt){
return gdt.getWeekOfYearLocalTime() === new GlideDateTime().addWeeksLocalTime(-1).getWeekOfYearLocalTime();
}