如何从jquery日期和时间选择器中选择和显示数据

I am using a j query date and time picker and cannot seem to display the selected data never mind save to a db. I am using php with mysql and am not sure how to get the information. this is the j query date and time picker and the suggested j query to get the date from the picker:

<script type="text/javascript">
    $(function(){
        $('#date_picker').dtpicker();
    });
</script>
<script>
PickerHandler.prototype.getDate = function(){
    var $picker = this.$pickerObject;
    var $input = this.$inputObject;
    return getPickedDate($picker);
};
</script>

and my html

<div class="section section-breadcrumbs"> 
 <div class="container"> 
  <div class="row"> 
   <div class="col-md-12"> 
    <h1>Book An Appointment</h1> 
   </div> 
  </div> 
 </div> 
</div> 
<div class="section">
 <div class="container"> 
  <center><div id="date_picker">
 </div>

<script type="text/javascript">
 $(function(){ 
  $('#date_picker').dtpicker(); });
</script> 

<p>Date: <input type="text" id="date_picker"></p>

I firstly want to display the returned value to make sure its working before I try and input to db but i cant even get this to work. Any ideas?

here is a couple of examples for the jquery datetime picker . datepicker1 datepicker2

If you are using jquery datepicker you can load it using the following: First load necessary javascript and css files for datepicker and then call the datepicker function on the element. (Make sure you include latest jquery)

<head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script>
 $(function() {
 $( "#datepicker" ).datepicker();
});
 </script>
</head>
<body>

<p>Date: <input type="text" id="datepicker"></p>
</body>

Here is a better view of the current code:

<div class="section section-breadcrumbs">
    <div class="container">
        <div class="row">
            <div class="col-md-12">
                <h1>Book An Appointment</h1>
            </div>
        </div>
    </div>
</div>

<div class="section">
    <div class="container">
    <center><div id="date_picker"></div>
<script type="text/javascript">
$(function(){
        $('#date_picker').dtpicker();
    });
</script>

<p>Date: <input type="text" id="date_picker"></p>

</div></center>
</div>
</div>