Calculate the Sum of the Bound field Column values using JavaScript

I have a GridView which consists of Five Bound Field Column Such 开发者_运维问答as AttributeName, Tax Percentage, Reference Amount, Sign, Tax Amount.

The GridView may have two rows or three rows or sometimes there would be no rows in the GridView.

Here I want to calculate the TaxAmount of all the rows in the GridView and I want to display the Total Tax amount into a Label.

I know how to do this in C#. But here, I want to do this in the Client Side itself using JavaScript. How to do this?

I think you will need to use "TemplateColumn" instead of "BoundColumn".

Here I changed the BoundField Column to TemplateField.

The answer for the above Question is

 function CalculateTax()
 {
    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);
    }
    document.getElementById('<%=TextBox1.ClientID %>').innerText = taxamount.toFixed(2)+ "/-";            
 }