在jquery中单击日历中的下一个/上一个按钮，获取日历div的ID

Question

I have showed multiple calendars on my page using jquery UI. The calendars are working fine. I am trying to get the ID of the calendar when i click on next or previous button on the calendar. The code i am using is this:

<div class="calendar" id="calendar1"></div> 
<div class="calendar"id="calendar2"></div> 
<div class="calendar" id="calendar3"></div>

and jquery code is

$('.calendar').datepicker({
  inline: true,
  firstDay: 1,
  showOtherMonths: true,
  dayNamesMin: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']
});
$(document).on('click', '.ui-datepicker-next', function () {
  console.log($(this).parent().parent().parent().attr('id'));
});

it should show calendar1/calendar2/calendar3 but instead on displaying id it shows undefined. The datepicker html is this

<div class="calendar hasDatepicker" id="calendar1">
  <div class="ui-datepicker-inline ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all" style="display: block;">
    <div class="ui-datepicker-header ui-widget-header ui-helper-clearfix ui-corner-all">
      <a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery_1488149175514.datepicker._adjustDate('#calendar50', -1, 'M');" title="Prev">
        <span class="ui-icon ui-icon-circle-triangle-w">Prev</span>
      </a>
      <a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery_1488149175514.datepicker._adjustDate('#calendar50', +1, 'M');" title="Next">
        <span class="ui-icon ui-icon-circle-triangle-e">Next</span>
      </a>

as we can see the parent call is correct and it is working if i use

console.log($('.ui-datepicker-next').parent().parent().parent().attr('id'));

but that will always give the id of first div ie calendar1.

Answer 1

As of the Docs its: onChangeMonthYear( Integer year, Integer month, Object inst )

onChangeMonthYear:function(year, month, instance){

    console.log(instance.id)

}

So try using:

$('.calendar').datepicker({
    inline: true,
    firstDay: 1,
    showOtherMonths: true,
    dayNamesMin: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
    onChangeMonthYear:function(year, month, instance){

        console.log(instance.id)

    }
});