How to Now Button click functionality Perform in datetime Picker

How to Now Button click functionality Perform in datetime Picker

Hello,

Here I attached image and below my code.
How to Now Button functionality perform in my code.

<script type="text/javascript">
        $(document).ready(function (){
            $("#date_begin").click(function(){                
                $('#date_begin').datetimepicker({
                    
                    startDate: "today",
    todayBtn: true,
    autoclose: true,
    todayHighlight: true,
minDate: "today",
changeMonth: true,
    changeYear: true,
                dateFormat: 'dd/mm/yy'


                }); 
                
                
            }); 
     
            
            
        });
    
    </script>