https://www.maxkravmaga.com/wp-content/plugins/memberpress/js/date_picker.js?ver=1.3.42

1jQuery(document).ready(function($) {
2  //I guess these can be tweaked as time goes, but for now these seem like reasonable targets
3  var currentYear = new Date().getFullYear();
4  var pastYears = currentYear - 100;
5  var futureYears = currentYear + 50;
6
7  var timeFormat = 'HH:mm:ss';
8  var showTime   = true;
9
10  //Front End needs to display cleaner
11  if(typeof MeprDatePicker != "undefined") {
12    timeFormat = MeprDatePicker.timeFormat;
13    showTime = Boolean(MeprDatePicker.showTime);
14  }
15
16  $('.mepr-date-picker').datetimepicker( {
17    dateFormat : 'yy-mm-dd',
18    timeFormat: timeFormat,
19    yearRange : pastYears + ":" + futureYears,
20    changeMonth : true,
21    changeYear : true,
22    showTime : showTime,
23    onSelect : function (date, inst) {
24      $(this).trigger('mepr-date-picker-selected', [date, inst]);
25    },
26    onChangeMonthYear : function (month, year, inst) {
27      $(this).trigger('mepr-date-picker-changed', [month, year, inst]);
28    },
29    onClose : function (date, inst) {
30      $(this).val(date.trim()); //Trim off white-space if any
31      $(this).trigger('mepr-date-picker-closed', [date, inst]);
32    }
33  });
34});