How to integrate the jquery datepicker

The datepicker is tied to a standard form input field. Focus on the input (click, or use the tab key) to open an interactive calendar in a small overlay. Choose a date, click elsewhere on the page (blur the input), or hit the Esc key to close. If a date is chosen, feedback is shown as the input's value.

To integrate the jquery datepicker we need the three files those are
1.jquery-ui.css
2.jquery.min.js
3.jquery-ui.min.js

You can download these files form here

Jquery ui files can be download here
Jquery-min.js file can be download here

Other wise you can simply use these CDNS

<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css" />  
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>  

Datepicker code

<!doctype html>  
 <html lang="en">  
  <head>  
  <meta charset="UTF-8">  
  <title>Datepicker</title>  
  <link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css" />  
 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>  
  </head>  
  <body>  
  <input type='text' id='txtDate' />  
  <script>  
      $(document).ready(function () {  
        $('#txtDate').datepicker();  
      });  
 </script>  
  </body>  
 </html>  