如何计算总和

问题描述

我有四个文本框

前两个texbox显示总和
最后两个文本框显示了当我向下光标时如何自动求和的总和
计算总和.无需使用任何脚本语言.是否可以编写代码
文本框.

i have four textboxes

first two texboxes show the sum
and last two textboxes show the sum when i am curser down how to automatically
calculate the sum. with out use any script language. is it posible to write code
textbox.

推荐答案

function CalculateSum()
    {

        var Form = document.frmsum;
        var txtbx1=  Form.txt1.value;
        var txtbx2 = Form.txt2.value;
        var txtbx3 = Form.txt3.value;
        var txtbx4 = Form.txt4.value;
       var allsum = Number(txtbx1)+Number(txtbx2)+Number(txtbx3)+Number(txtbx4);
        if(!isNaN(allsum) && allsum !=Infinity)
        {
            Form.txtsum.value = allsum;
        }
        return CheckZero()
    }

页面加载

on page load

txtsum.Attributes.Add("onblur", "return CalculateSum()");

谢谢
Ashish

Thanks
Ashish

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