The html file

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>

<!-- Change this if you want to allow scaling -->
   <meta name="viewport" content="width=default-width; user-scalable=no" />
   <meta http-equiv="Content-type" content="text/html;charset=utf-8">

   <title>Trial app</title>
   <link rel="stylesheet" href="thestylesheet.css" type="text/css">
    <script type="text/javascript" charset="utf-8" src="javascript1.js"></script>
    <script type="text/javascript" charset="utf-8" src="javascript2.js"></script>
    <script type="text/javascript" charset="utf-8" src="cordova-1.8.0.js"></script>

    <script>
    $(document).ready(function () {
        $("#btn").click( function() {

            var id = $('#id').val();
             var name =  $('#name').val();
              var Address = $('#Address').val();

              var person = new Array();
              person[0] = id;
              person[1] = name;
              person[2] = Address;
              var topost;


        $.ajax({
            url: "http://localhost/connection.php",
            type: "POST",

            data : {topost : JSON.stringify(person)},
            datatype: "json",
            success: function(data) { alert(data); }
        });
        return false;
    });
    });
</script>
</head>

<body>

<div data-role="header">
        <h1>National Innovation Foundation</h1>
    </div><!-- /header -->
<div data-role="content">
    <form id="target" method="post">
        <label for="id">
            <input type="text" id="id" placeholder="ID">
        </label>

        <label for="name">
            <input type="text" id="name" placeholder="Name">
        </label>

        <label for="Address">
            <input type="text" id="Address" placeholder="Address">
        </label>
<div id="btn" data-role="button" data-icon="star" data-theme="e">Add record</div>
        <!--<input type="submit" value="Add record" data-icon="star" data-theme="e">
        -->
    </form>

</div>
</body>
</html>