date range picker on start date selected code example

Example 1: bootstrap date range picker get start date

$('#IDOfDateRangePicker').data('daterangepicker').startDate;
$('#IDOfDateRangePicker').data('daterangepicker').endDate;

Example 2: date range picker select date and several weeks

<script type="text/javascript" src="https://cdn.jsdelivr.net/jquery/latest/jquery.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/momentjs/latest/moment.min.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/daterangepicker/daterangepicker.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/daterangepicker/daterangepicker.css" />

<div class="row">
    <input id="daterangepicker" type="text" />
    <select>
          <option value="1">Mo</option>
          <option value="2">Tu</option>
          <option value="3">We</option>
          <option value="4">Th</option>
          <option value="5">Fr</option>
          <option value="6">Sa</option>
          <option value="0">Su</option>
      </select>
</div>

<script>
$(document).ready(function () {
  $('#daterangepicker').daterangepicker({
    parentEl: '.row',
    isInvalidDate: function(date) {
      return parseInt($(this.container).parent().find('select').val()) !== new Date(date).getDay();
    }
  });
});
</script>