How to put a default date in bootstrap datetimepicker

Just set the value after setting up the datetimepicker:

$('.form_date').datetimepicker({
  weekStart: 1,
  todayBtn: 1,
  autoclose: 1,
  todayHighlight: 1,
  startView: 2,
  minView: 2,
  forceParse: 0,
});
$('#dtp_input2').val(Date());

In my case : Insert this defaultDate: new Date() code into your javascript datetimepicker.

<script type="text/javascript">
$(function () {
    $('#datetimepicker10').datetimepicker({
        defaultDate: new Date(),
        viewMode: 'years',
        format: 'MM/DD/YYYY'
    });
});

Looks like from the documentation that you can set a defaultDate when instantiating the datetimepicker.

$(function () {
    $('#datetimepicker5').datetimepicker({
        defaultDate: "11/1/2013",
        disabledDates: [
            moment("12/25/2013"),
            new Date(2013, 11 - 1, 21),
            "11/22/2013 00:53"
        ]
    });
});