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get date range from week number in year

/ Published in: JavaScript
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  1. function getDateRangeOfWeek(weekNo){
  2. 		var d1 = new Date();
  3. 		numOfdaysPastSinceLastMonday = eval(d1.getDay()- 1);
  4. 		d1.setDate(d1.getDate() - numOfdaysPastSinceLastMonday);
  5. 		var weekNoToday = d1.getWeek();
  6. 		var weeksInTheFuture = eval( weekNo - weekNoToday );
  7. 		d1.setDate(d1.getDate() + eval( 7 * weeksInTheFuture ));
  8. 		var rangeIsFrom =  eval(d1.getMonth()+1)   +"/"  +  d1.getDate()  + "/"  +   d1.getFullYear();
  9. 		d1.setDate(d1.getDate() + 6);		
  10. 		var rangeIsTo = eval(d1.getMonth()+1)   +"/"  +  d1.getDate()  + "/"  +   d1.getFullYear() ;
  11. 		return rangeIsFrom + " to "+rangeIsTo;
  12. };

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