JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.7.1/js/bootstrap-datepicker.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.7.1/css/bootstrap-datepicker.css">
     <div class="form-group">
                            <label>Çalışılan Tarih</label>
                            <div class="input-group date" >
                                <input type="text" name="CalisilanGun" id="CalisilanGun" class="form-control" value="02/11/2017" >
                                <div class="input-group-addon">
                                    <span class="glyphicon glyphicon-th"></span>
                                </div>
                            </div>
                        </div>

JavaScript

$('#CalisilanGun').datepicker({
            startDate:'-4d',
            format: 'dd/mm/yyyy',
            language:'tr-tr',
            autoclose: true,
          
        });
        var test="/Date(1509483600000)/"
        var d = new Date(parseInt(test.substr(6)));
           $('#CalisilanGun').datepicker('update', d);