html input date default today
<!-- HTML -->
<input type="date" class="today">
<script>
  // JQuery
  $(document).ready( function() {
    $('.today').val(getToday());
  });
  
  function getToday(){
	const local = new Date();
    local.setMinutes(local.getMinutes() - local.getTimezoneOffset());
	return local.toJSON().slice(0,10);
  }
</script>
