Javascript Check is valid date

function isValidDate(d, m, Y) {
  var arrDayInMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
  if (d < 1 || d > 31) return false;
  if (m < 1 || m > 12) return false;
  if (Y < 1) return false;
 
  if (Y%100 == 0) {
    if (Y%400 == 0) {
      arrDayInMonth[1] = 29;
    }
  } else {
      if (Y%4 == 0) arrDayInMonth[1] = 29;
  }
 
  if (d > arrDayInMonth[m-1]) return false;
 
  return true;
}