hey its me again..
now another matter about fetch data from db for provide information to modal form ( edit data ) not shown,

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here's just part code fr each related page :

modal edit
ill try with first input type with id="name" name="name"

<!-- edit modal --> <div class="modal fade" tabindex="-1" role="dialog" id="editEmployModal"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title"><span class="glyphicon glyphicon-edit"></span> Update Pegawai</h4> </div> <form class="form-horizontal" action="pegawai/update.php" method="POST" id="updateMemberForm"> <div class="modal-body"> <div class="edit-messages"></div> <div class="form-group"> <!--/here teh addclass has-error will appear --> <label for="nama" class="col-sm-2 control-label">Nama</label> <div class="col-sm-10"> <input type="text" class="form-control" id="nama" name="nama" placeholder="Nama Pegawai"> <!-- here the text will apper --> </div> </div>

list_employee.php
here's just part of entire code for list employee, event onclick button to hold id each employee. If clicked it will show a modal edit

<li> <a type="button" data-toggle="modal" data-target="#editEmployModal" onclick="editEmploy(\''.$id.'\')"> <span class="glyphicon glyphicon-edit"></span> Edit</a> <li>

jquery file

function editEmploy(id = null) {

    if (id) {
        //fetch data from db
        $.ajax({
            url:'pegawai/fetch.php',
            type:'post',
            data:{'nip': id},
            dataType:'json',
            success:function(response) {
                $("#name").val(response.name); //not working, at modal data name fr db isnt shown
                $("#name").val('daniweb'); //not working, at modal set string name isnt shown too
            }

        });

        //Update data pegawai
    }else{
        alert("ERROR : Refresh halaman kembali !!");
    }

}

Fetch.php

<?php 

include"../../config/koneksi.php";

$nip = $_POST['nip'];

$sql = "SELECT * FROM tbl_branch JOIN tbl_employe ON tbl_branch.los_code = tbl_employe.los_code WHERE tbl_employe.nip = $nip";
$query = mysqli_query($koneksi,$sql);
$result = mysqli_fetch_assoc($query);

// close the database connection
    mysqli_close($koneksi);
    echo json_encode($result);

First thing to test - did the query work or fail? Add var_dump($result); after line 10 in fetch.php and run that script standalone, using a known good value for $nip. Before you go much further into this application, you may want to review the OWASP Guidelines for PHP and MySQL security. It looks like someone could feed something like "1 or 1=1" to the fetch.php script, and expose the entire table.