no message

resources/views/vendor/adminlte/layouts/customers/rincianpemesanan.blade.php

@@ -40,7 +40,7 @@
 				<div class="form-group">
 					<div class="col-sm-10">
 						<label>ExtraBed</label>
-						<input type="number" min="0" name="extrabed" class="form-control" id="inputEmail3" >
+						<input type="number" min="0" name="extrabed" onchange="updateVal(this)" class="form-control" id="exbed" >
 					</div>
 				</div>
 
@@ -116,7 +116,7 @@
 				<tr>
       					<td> Total Bayar</td>
       					<td>:</td>
-					    <td><input type="text" name="total_harga" value="{{$totalHarga}}" disabled></td>
+					    <td><input type="text" id="tot_har" name="total_harga" value="{{$totalHarga}}" disabled></td>
       				</tr>
       			</table>
             <br>
@@ -128,4 +128,14 @@
 		<div class="clearfix"></div>
 	</div>
 </div>
+
+<script>
+	function updateVal(object) {
+
+		var field = document.getElementById('tot_har');
+		field.value = parseInt(object.value) * 30000 + parseInt({{$totalHarga}});
+		
+	}
+</script>
+
 @endsection