Save Jquery Validate

function reload_table() {
    table.ajax.reload(null,false); //reload datatable ajax
    $("#nama").val('');
    $("#satuan").val('');
    $("#harga").val('');
}

$(document).ready(function() {
    var form        = $('#formInput');
    var error       = $('.alert-danger', form);
    var success     = $('.alert-success', form);

    $("#formInput").validate({
        errorElement: 'span',
        errorClass: 'help-block help-block-error',
        focusInvalid: false,
        ignore: "",
        rules: {
            nama: {
                required: true,
                remote: {
                    url: "<?php echo site_url('admin/barang/register_ket_exists'); ?>",
                    type: "post",
                    data: {
                        nama: function() {
                            return $("#nama").val();
                        }
                    }
                }
            },
            satuan: {
                required: true
            },
            harga: {
                required: true, number: true
            }
        },
        messages: {
            nama: {
                required :'Nama Barang/Material harus di isi', remote:'Barang/Material sudah Ada'
            },
            satuan: {
                required :'Satuan harus di isi'
            },
            harga: {
                required :'Harga Satuan harus di isi', number : 'Harga Satuan harus Angka'
            }
        },

        invalidHandler: function (event, validator) { //display error alert on form submit
            success.hide();
            error.show();
            Metronic.scrollTo(error, -200);
        },

        errorPlacement: function (error, element) { // render error placement for each input type
            var icon = $(element).parent('.input-icon').children('i');
            icon.removeClass('fa-check').addClass("fa-warning");
            icon.attr("data-original-title", error.text()).tooltip({'container': 'body'});
        },

        highlight: function (element) { // hightlight error inputs
            $(element)
            .closest('.form-group').removeClass("has-success").addClass('has-error'); // set error class to the control group
        },

        unhighlight: function (element) { // revert the change done by hightlight
        },

        success: function (label, element) {
            var icon = $(element).parent('.input-icon').children('i');
            $(element).closest('.form-group').removeClass('has-error').addClass('has-success'); // set success class to the control group
            icon.removeClass("fa-warning").addClass("fa-check");
        },

        submitHandler: function(form) {
            dataString = $("#formInput").serialize(); // Ambil Value dari Form
            $.ajax({
                url: "<?php echo site_url('admin/barang/savedata'); ?>",
                type: "POST",
                data: dataString,
                success: function(data) {
                    swal({
                        title:"Sukses",
                        text: "Simpan Data Berhasil",
                        showConfirmButton: false,
                        type: "success",
                        timer: 2000
                    });
                    reload_table();
                },
                error: function (jqXHR, textStatus, errorThrown) {
                    alert('Error Simpan Data');
                    reload_table();
                }
            });
        }
    });
});