Валерий

$date_to = strtotime('2018-05-03 23:59:59');
$date_from = strtotime('2018-05-03 00:00:00');
for ($i = $date_from; $i <= $date_to; $i += 60 * 30){
     $aDinner[] = date('H:i', $i) . '-' . date('H:i', $i + 60 * 30);
}

for (el of searchData) {
  dataResultArray(await Data.findOne({ el: el }))
}

async function main() {
  let Data = mongoose.model('data', DataSchema)
  let searchData = [...]

  for (el of searchData) {
    dataResultArray(await Data.findOne({ el: el }))
  }
}

main();

$(document).on("submit", "form", function (e)
{
  if (!$(this).data('validateInitialized')) {
    e.validate();
    $(this).data('validateInitialized', true).trigger('submit');
  }
});

preg_replace('/^(.*)\.(.*)$/U', 'replacement$2', 'thistrplase.noreplace');

$arr1 = [
    '04.02.2013-03.03.2013', 
    '04.03.2013-03.04.2013',
    '04.12.2013-03.01.2014',
    '04.01.2014-03.02.2014',
    '04.12.2014-03.01.2015',
    '04.01.2015-03.02.2015',
    '04.02.2015-03.03.2015',
];

$result = [];

foreach ($arr as $r) {
	$year = [];
	if (preg_match('/.[0-9]{4}/', $r, $year)) {
		$year = $year[0];
		if (!isset($result[$year]) {
			$result[$year] = [];
		}
		$result[$year][] = str_replace(".$year", '', $r);
	}
}