Ajax

<script language="javascript">

    $(document).ready(function(){
        $("#submit").click( function (){
        $.ajax({
               type: "POST",
               url : 'http://www.berthojoris.com/dev/jqm/login_cek.php',
               data: {
                  username:$('#username').val(),
                  password:$('#password').val(),
               },
               dataType: "json",
               success: function (data) {
                    if (data.response=='SuksesLogin') {
                        jAlert('Login Successfully', 'Success');
                    } else {
                        jAlert('Login Failed', 'Fail');
                    }
                }
      });
    });
});


    function validateForm(){
          var CekNama=document.forms["komentar"]["nama"].value;
          if (CekNama==""){
             jAlert('Nama anda belum dimasukan', 'Follow Rules');
             return false;
             }
    }

    function ClearForm(){
        document.forms["login"]["username"].value = ""
        document.forms["login"]["password"].value = ""
    }

</script>