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如何在qty的动态表列中求和，我可以得到price1的总和，但是我不知道求和qty的列，这是动态表，我可以通过添加按钮添加行。请帮忙，我是php新手。



<html>
<head>
<div>
<script type="text/javascript">
function tot(elem) {
var d=document.getElementById("total").value;
var total=Number(d); 
}
var total = 0;
function getValues() {
var qty1 = 0;
var unit = 0;
var obj = document.getElementsByTagName("input");
  for(var i=0; i<obj.length; i++){
     if(obj[i].name == "qty1[]"){var qty1 = obj[i].value;}
     if(obj[i].name == "unit[]"){var unit = obj[i].value;}
     if(obj[i].name == "totala[]"){
     if(qty1 > 0 && unit > 0)
     {obj[i].value = (qty1*unit).toFixed(2);total+=(obj[i].value*1);}
                    else{obj[i].value = 0;total+=(obj[i].value*1);}
            }
         }
    document.getElementById("total").value = (total*1).toFixed(2);
    total=0;
}
</script>
<script>
function addRow(tableID) {
        var table = document.getElementById(tableID);
        var rowCount = table.rows.length;
        var row = table.insertRow(rowCount);
        var colCount = table.rows[0].cells.length;
        for(var i=0; i<colCount; i++) {
            var newcell = row.insertCell(i);
            newcell.innerHTML = table.rows[0].cells[i].innerHTML;
            //alert(newcell.childNodes);
            switch(newcell.childNodes[0].type) {
                case "text":
                        newcell.childNodes[0].value = "";
                        break;
                case "checkbox":
                        newcell.childNodes[0].checked = false;
                        break;
            }
        }
    }
                function deleteRow(tableID)
{
        try
             {
            var table = document.getElementById(tableID);
            var rowCount = table.rows.length;
                for(var i=0; i<rowCount; i++)
                    {
                    var row = table.rows[i];
                    var chkbox = row.cells[0].childNodes[0];
                    if (null != chkbox && true == chkbox.checked)
                        {
                        if (rowCount <= 1)
                            {
                            alert("Cannot delete all the rows.");
                            break;
                            }
                        table.deleteRow(i);
                        rowCount--;
                        i--;
                        }
                    }
                } catch(e)
                    {
                    alert(e);
                    }
   getValues();
 }
 </script>
 </head>
 <body>
 <form id="form1" name="form1" method="post" action="">
 <table width="800" border="0">
  <tr>
  <td colspan="5" align="center">Products</td>
 </tr>
 <tr align="center">
    <td><INPUT type="button" value="Add Row" onclick="addRow('dataTable')" /></td>
    <td>
 <INPUT type="button" value="Delete Row" onclick="deleteRow('dataTable')" /></td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
 </tr>
 <tr align="center">
  <td width="169">qty</td>
    <td width="145">&nbsp;</td>
    <td width="368">unit</td>
    <td width="151">price1</td>
        </tr>
 </table>
  <div>
<table width="800" border="0" class="box4_Box" id="dataTable">
<tr>
<td width="21" valign="top"><input name="chk[]" type="checkbox"/></td>

  <td width="280">
    <input type="text" name="qty1[]" id="qty" onkeyup="getValues()"onblur=""/></td>
  <td width="337"> 
    <input type="text" name="unit[]" id="unit" onkeyup="getValues()" onblur=""/></td>
  <td width="144">
    <input type="text" name="totala[]" id="totala" onkeyup="getValues()" /></td>
   </tr>
  </table>
    </div>
  <div>
  <table width="800" border="0">
  <tr>
     <td width="305"><input type="text" name="qtytotal" id="qtytotal" value="" /></td>
  <td width="337">&nbsp;</td>
  <td width="144"><input type="text" name="total" id="total" value="" /></td>
 </tr>
 </table>
  </div>
  </form>
 </body>
 </html>

4

1 回答 1

1 
function sumQty(tableID) {
    var total = 0;
    var table = document.getElementById(tableID);
    var rowCount = table.rows.length;
    for (var i = 0; i < rowCount; i++) {
        var row = table.rows[i];
        var colCount = row.cells.length;
        for (var j = 0; j < cellCount; j++) {
            var node = row.cells[j].childNodes[0];
            if (node.name == "qty[]") {
                total += parseInt(node.value);
            }
        }
    }
    return total;
}
于 2013-03-02T11:51:15.020 回答