计算2个texbox并使用javascript在标签中显示输出 [英] calcuate 2 texbox and display output in label using javascript

问题描述

im在我的usercontrol页面中有2个文本框和1个标签.我需要减去2个文本框值并显示在label中.我使用脚本来执行此操作，但我没有得到输出


这是我的剧本

im having 2 textbox and 1 label in my usercontrol page.i need to subtract 2 textbox values and display in label.i used a script to do this but i didnt get the output


this is my script

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="PanelBinning.ascx.cs" Inherits="UploadedExcel_UserControls_PanelBinning" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="AjaxControlToolkit" %>
<%@ Register Src="~/UploadedExcel/UserControls/OperationLeftPanel.ascx" TagName="OperationLeftPanel"

    TagPrefix="PPM" %>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            var txtStartQty = $('input:text[id$=txtStartQty]').keyup(foo);
            var txtEndQty = $('input:text[id$=txtEndQty]').keyup(foo);
 
            function foo() {
                var value1 = txtStartQty.val();
                var value2 = txtEndQty.val();
                var sub = subt(value1,value2);
 
                var labelText = $('#<%= lblLossCnt.ClientID %>').html(sub);
            }
 
            function subt() {
                var sub = 0;
                for (var i = 0, j = arguments.length; i < j; i++) {
                    if (IsNumeric(arguments[i])) {
                        sub -= parseFloat(arguments[i]);
                    }
                }
                return sub;
            }
            function IsNumeric(input) {
                return (input - 0) == input && input.length > 0;
            }
        });
    </script>

<asp:TextBox ID="txtStartQty" runat="server" CssClass="txtValues" TabIndex="1"

 <asp:TextBox ID="txtEndQty" runat="server" CssClass="txtValues" TabIndex="2"

                                                 ValidationGroup="valRole"></asp:TextBox>
                                                 ValidationGroup="valRole"></asp:TextBox>

<asp:Label ID="lblLossCnt" runat="server" CssClass="txtValues">

推荐答案

( var txtStartQty =

(function () { var txtStartQty =

('

('input:text[id

= txtStartQty]').keyup(foo); var txtEndQty =

=txtStartQty]').keyup(foo); var txtEndQty =

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