我有一个带有三个COl的GridView,如下所示:
ID Sign Amount
------ -------- ---------
1 + 1000
2 - 500
3 - 750
因此“金额”栏的总和应为“-250”。考虑列“符号”也与金额。 这是我的GridView的源代码:
<Columns>
<asp:BoundField DataField="ID" HeaderText="ID"/>
<asp:TemplateField HeaderText="Sign" >
<ItemTemplate>
<asp:TextBox ID="txtgvSign" runat="server" Text='<%# Bind("Sign") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Amount">
<ItemTemplate>
<asp:TextBox ID="txtAmount" runat="server" Text='<%# Bind("Amount") %>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
到目前为止,我已经编写了一个JavaScript,但它只计算了金额的总和。我不知道如何根据Sign值计算Sum。以下是我写的JavaScript:
function CalculateTax(fixedtotal)
{
var taxgrid = document.getElementById('<%=gvAttribute.ClientID %>');
var taxip = taxgrid.getElementsByTagName('input');
var taxamount = 0*1;
for(i = 0; i < taxip.length; i++)
{
var tax = taxip[i].value;
taxamount = parseFloat(taxamount) + parseFloat(tax);
}
return parseFloat(fixedtotal) + parseFloat(taxamount);
}
所以请对此Javascript进行更改。
答案 0 :(得分:2)
你可以试试下面的代码吗?
function CalculateTax(fixedtotal)
{
var taxgrid = document.getElementById('<%=gvAttribute.ClientID %>');
var taxip = taxgrid.getElementsByTagName('input');
var taxamount = 0*1;
for(i = 0; i < taxip.length; i+= 2)
{
var sign = taxip[i].value;
var tax = taxip[i+1].value;
taxamount = parseFloat(taxamount) + (sign =='+' ? 1 : -1)* parseFloat(tax);
}
return parseFloat(fixedtotal) + parseFloat(taxamount);
}
答案 1 :(得分:0)
<script language="javascript" type="text/javascript">
function Calculate() {
var grid = document.getElementById("<%=grid.ClientID%>");
var sum = 0;
for (var i = 1; i < grid.rows.length; i++) {
var Cell = grid.rows[i].getElementsByTagName("input");
if (!Cell[4].value) {sum += 0; } else { sum += parseFloat(Cell[0].value);}
}
alert(sum);
}
</script>
<asp:TemplateField HeaderText="Current payment" >
<ItemTemplate>
<asp:TextBox ID="txtvalue" runat="server" Width="70px" BorderStyle="None" onkeyup="Calculate();" ></asp:TextBox>
</ItemTemplate>
<ItemStyle Width="120px" />
</asp:TemplateField>`enter code here`