jquery

• https://bootstrap-datepicker.readthedocs.io/en/latest/options.html
• https://uxsolutions.github.io/bootstrap-datepicker/?#sandbox
• https://gijgo.com/datepicker/example/bootstrap-4
• https://stackoverflow.com/questions/25874375/multiple-dates-in-bootstrap-date-picker

<script>
        $('#date').datepicker({
            uiLibrary: 'bootstrap4',
            minDate: '01/01/2020',
            maxDate: '31/12/2020',
            maxViewMode: 'months',
            multidate: 15,
            multidateSeparator: ',',
            autoclose: false,
            language: 'ca',
            datesDisabled: ['02/06/2020', '02/21/2020'],
            format: 'dd/mm/yyyy'
        });
</script>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.8.0/js/bootstrap-datepicker.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.8.0/css/bootstrap-datepicker.css" rel="stylesheet"/>
<input type="text" id="date">