js

<script type="text/javascript">
$(document).ready(function(){
      var i=1;
     $("#add_row").click(function(){
      $('#addr'+i).html("<td>"+ (i+1) +"</td><td><input name='kode"+i+"' id='kode_barang' type='text' placeholder='Masukkan Kode' class='form-control input-md'  onkeyup='get_b_name();get_stock()' /> </td><td><input name='nama"+i+"' type='text' placeholder='Nama Barang' class='form-control input-md'  id='stock' /> </td><td><input  name='stock"+i+"' type='text' placeholder='Stock'  class='form-control input-md'  id='jumlah'></td><td><input  name='jumlah"+i+"' type='text' placeholder='Jumlah'  class='form-control input-md'></td>    <td><input  name='harga"+i+"' type='text' placeholder='Harga'  class='form-control input-md'></td> <td><input  name='total"+i+"' type='text' placeholder='Total'  class='form-control input-md'></td>");
	$('#tab_logic').append('<tr id="addr'+(i+1)+'"></tr>');
      i++;
  });
     $("#delete_row").click(function(){
       if(i>1){
     $("#addr"+(i-1)).html('');
     i--;
     }
   });
});
</script>
<script type="text/javascript">
function get_b_name()

	{
	var a =$('#kode_barang').val();
	$.post('<?php echo base_url();?>admin/barang/get_b_name',{a:a},function(res){
		$('#nama_barang').val(res);
		});
	}
function get_stock()
	{
	var a =$('#kode_barang').val();
	$.post('<?php echo base_url();?>admin/barang/get_stock_',{a:a},function(res){
		$('#stock').val(res);
		});
	}
function hitung2()
	{
		var a = $("#jumlah").val();
		var b = $("#harga").val();
		c = a * b; //a kali b
		$("#harga_total").val(c);
	}
function isNumberKey(evt)
	{
		var charCode = (evt.which) ? evt.which : event.keyCode;
		if (charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57))
			return false;
			return true;
	}
</script>







<!---html--->



<h1 class="text-center">Tambah Pembelian</h1>
<form class="form-horizontal" role="form" action="<?php echo base_url()?>admin/pembelian/addProductDb" method="post" enctype="multipart/form-data">
<div class="form-group">
      <label for="lastname" class="col-sm-4 control-label">Kode Pembelian </label>
      <div class="col-sm-3">
          <input type="text" class="form-control"  name="kode_pembelian" required="" >
      </div>
	  <?php echo form_error('kode_pembelian'); ?>


</div>
<div class="form-group">
      <label for="lastname" class="col-sm-4 control-label">Tanggal</label>
      <div class="col-sm-3">
          <input type="text" class="form-control"  name="tanggal" required="" >
      </div>
	  <?php echo form_error('tanggal'); ?>
</div>

<div class="form-group">
      <label for="lastname" class="col-sm-4 control-label">Kode Kategori </label>
      <div class="col-sm-3">
          <input type="text" class="form-control"  name="kode_kategori" required="" >
      </div>
	  <?php echo form_error('kode_kategori'); ?>
</div>

<div class="form-group">
      <label for="lastname" class="col-sm-4 control-label">Kode Suplier </label>
      <div class="col-sm-3">
          <input type="text" class="form-control"  name="kode_suplier" required="" >
      </div>
	  <?php echo form_error('kode_suplier'); ?>
 </div>
<div class="form-group">
      <label for="lastname" class="col-sm-4 control-label">Refrensi</label>
      <div class="col-sm-3">
          <input type="text" class="form-control"  name="refrensi" required="" >
      </div>
	  <?php echo form_error('refrensi'); ?>
</div>
</form>
<div class="container">
    <div class="row clearfix">
    <div class="col-md-12 column">
      <table class="table table-bordered table-hover" id="tab_logic">
        <thead>
          <tr >
            <th class="text-center">
              #
            </th>
            <th class="text-center">
              Kode
            </th>
			<th class="text-center">
              Nama Barang
            </th>
            <th class="text-center">
             Stock
            </th>
            <th class="text-center">
              Jumlah
            </th>
			 <th class="text-center">
              Harga
            </th>
			<th class="text-center">
              Total
            </th>
          </tr>
        </thead>
        <tbody>
          <tr id='addr0'>
            <td>
            1
            </td>
            <td>
            <input type="text"  id="kode_barang"    name='kode0'  class="form-control" placeholder="Masukkan Kode" onkeyup="get_b_name();get_stock();"/>
            </td>
			<td>
            <input type="text" id="nama_barang"   name='nama0'  placeholder='Nama Barang' class="form-control" readonly/>
            </td>
            <td>
            <input type="text" id="stock"  name='stock0' placeholder='Stock' class="form-control" readonly/>
            </td>
            <td>
            <input type="text"  id="jumlah"  onkeyup="hitung2();"  onkeypress="return isNumberKey(event)"  name='jumlah0' placeholder='Jumlah' class="form-control"/>
            </td>
			 <td>
            <input type="text" id="harga"  onkeyup="hitung2();" onkeypress="return isNumberKey(event)"  name='harga0' placeholder='Harga' class="form-control"/>
            </td>
			 <td>
            <input type="text" id="harga_total"  onkeyup="hitung2();"  onkeypress="return isNumberKey(event)"  name='total0' placeholder='Total' class="form-control" readonly/>
            </td>
          </tr>
                    <tr id='addr1'></tr>
        </tbody>
      </table>