I am using a add-on voor Bootstrap for be able to work with a datepicker: https://bootstrap-datepicker.readthedocs.io/en/latest
It works with no problem when attached to an input field.

I am now trying to make it visible as inline, I ahev tried to figure out the code with this tool: https://uxsolutions.github.io/bootstrap-datepicker/?markup=embedded&format=dd-mm-yyy&weekStart=&startDate=&endDate=&startView=0&minViewMode=0&maxViewMode=4&todayBtn=false&clearBtn=false&language=nl&orientation=auto&multidate=&multidateSeparator=&calendarWeeks=on&todayHighlight=on&keyboardNavigation=on&forceParse=on#sandbox

For some reason nothing wil show up. Any suggestions?
<div id="calendar"></div>
<!-- Datepicker -->
<script src="includes/js/bootstrap-datepicker.js"></script>
<script src="includes/js/bootstrap-datepicker.nl.min.js"></script>
<script type="text/javascript">
$('#sandbox-container calendar').datepicker({
language: "nl",
calendarWeeks: true,
todayHighlight: true
});
</script>