javascript 統計輸入框金額

javascript 統計輸入框金額

<script type="text/javascript">
function calculate(f)
{
var nums = f.num;
var ntext = f.num;
var result = <%= request.form("answer")%>;
for(var i=0;i<nums.length;i++)
{
if(nums[i].checked)
{
result+=parseFloat(ntext[i].value);
}
}
f.answer.value=Number(result).toFixed(2);
 }
</script>

<SCRIPT language="javascript">
function setzero(f)
{
var result = 0;
document.getElementById("total").value = Number(result).toFixed(2);
}
</SCRIPT>

<script type="text/javascript">
var runtotal = <%= runtotal %>;
  parseFloat('runtotal');
 
function UpdateCost(runtotal) {
  var gn, elem;
  for (i=0; i<200; i++) {
    gn = 'id'+i;
    elem = document.getElementById(gn);
    if (elem.checked == true) { runtotal += Number(elem.value); }
  }
  parseFloat('runtotal');
  document.getElementById('total').value = runtotal.toFixed(2);
}