01.<form name="frmprice" method="POST">
02.<table>
03.<?php for($i=1;$i<=5;$i++){ ?>
04.<tr>
05. <td>
06. <!-- เปลี่ยน type เป็น number -->
07. <input type="number" name="price[]" id="price[]" onkeyup="fncSum();"></td>
08.</tr>
09.<?php } ?>
10.<tr>
11.<td>
12.<label>Total : </label>
13.<input type="text" name="sumprice" readonly></td>
14.</tr>
15.</table>
16.</form>
17.
18.<script language="JavaScript">
19. function fncSum()
20. {
21.
22. var sum = 0;
23. for(var i=0;i<document.frmprice['price[]'].length;i++){
24.
25. if(document.frmprice['price[]'][i].value !=""){
26. sum += parseFloat(document.frmprice['price[]'][i].value);
27. }
28. }
29. document.frmprice.sumprice.value = sum;
30.
31. }
32.
33.</script>
