I'm not able to connect with database using jquery ajax

I'm not able to connect with database using jquery ajax.

The below is the login1.html page

    <form method='POST'>
                <div class="username">
                    <input type="text" id='name' name="name" class="form-control" placeholder="Enter your username">
                    <i class="glyphicon glyphicon-user"></i>
                </div>
                <div class="password">
                    <input type="password" id='password' name='password' class="form-control" placeholder="Enter your password">
                    <i class="glyphicon glyphicon-lock"></i>
                </div>
                <div id="error"></div>
                <div class="custom-radio-checkbox">
                    <input tabindex="1" type="checkbox" class="bluecheckradios">
                    <label>Remember me</label>
                </div>
                <script>
                    $(document).ready(function(){
                      $('.bluecheckradios').iCheck({
                        checkboxClass: 'icheckbox_flat-blue',
                        radioClass: 'iradio_flat-blue',
                        increaseArea: '20%' // optional
                      });
                    });     
                </script>
                <input type="submit" class="btn btn-primary style2" name='submit' id="submit" value="Sign In">
            </form>

The form value is transferred through jquery ajax

<script>

$(document).ready(function(){

   // jQuery methods go here...


$('#submit').click(function(){

    var username = $('#name').val();
    var pass = $('#password').val();

    var datastring = {username:username,pass:pass};
    if($.trim(username).length>0 && $.trim(pass).length>0){
        $.ajax({
        type: "POST",
        url : "process/login.php",
        data : datastring,
        cache: false,
        beforeSend : function(){
            $("#submit").val('Connectiing...');
        },
        success:function(data){
            if(data){
                window.location.href('http://www.google.com');
            }
            else{
                $('#loginone').shake();
                $('#submit').val('Login')
                $("#error").html("<span style='color:red'>Error:</span>Invalid Username or Password");
            }
        }

        });
    }
return false;

});

});

</script>

** This is the data connection page process/login.php**

<?php

    include_once('config.php');

    if(isset($_POST['submit'])){
        $username = $_POST['username'];
        $pass = $_POST['pass'];
        $sql = "select id from login where login_name = '".$username."' and login_password = '".$pass."' ";
        $result = $conn->query($sql);
        if($result->num_row > 0){

            echo "connected";
        }



    }//EOF SUBMIT

?>

When ever i pass the correct credentials i get an error for wrong username and password.