Format text box with commas and decimal points

Question

1.00/5 (1 vote)

See more:

Hie all,
I have two text boxes which automatically add commas when user enters number. These text boxes are added to third text box. It works fine with commas. But I want all text boxes to automatically format to two decimals including comma (Ex : 1,345.00 + 3,456.00 = 4801.00) .
I got this code which works fine to add text boxes and show result with comma but it does not automatically include two decimal points. Please help me. Thanks in advance.

XML

<%@ Page Title="" Language="C#" MasterPageFile="~/Site1.Master" AutoEventWireup="true" CodeBehind="WebForm8.aspx.cs" Inherits="Application.WebForm8" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
    <script type="text/javascript" language="javascript">
        function Comma(Num) { //function to add commas to textboxes
            Num += '';
         Num = Num.replace(',', ''); Num = Num.replace(',', ''); Num = Num.replace(',', '');
         Num = Num.replace(',', ''); Num = Num.replace(',', ''); Num = Num.replace(',', '');
         x = Num.split('.');
         x1 = x[0];
         x2 = x.length > 1 ? '.' + x[1] : '';
         var rgx = /(\d+)(\d{3})/;
         while (rgx.test(x1))
         x1 = x1.replace(rgx, '$1' + ',' + '$2');
         return x1 + x2;

     }
     function sumCalc() // function to remove comma and then add to third textbox
{
         var txt1 = document.getElementById('<%=tb1.ClientID %>').value.replace(/,/g, "");
         var txt2 = document.getElementById('<%=tb2.ClientID %>').value.replace(/,/g, "");
         var txt3 = document.getElementById('<%=tb3.ClientID %>').value = Comma(parseFloat(txt1) + parseFloat(txt2));

     }
    </script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <asp:TextBox ID="tb1" runat="server" onkeyup = "javascript:this.value=Comma(this.value);" ></asp:TextBox>
    <asp:TextBox ID="tb2" runat="server" onkeyup = "javascript:this.value=Comma(this.value);"></asp:TextBox>
    <br />
    <asp:Label ID="Label1" runat="server" Text="Result"></asp:Label>
    <br />
    <asp:TextBox ID="tb3" runat="server" onfocus="javascript:sumCalc();" ></asp:TextBox>
    <br />
    <br />
    <br />
</asp:Content>

Posted 28-Nov-12 13:49pm

Slacker89

Updated 28-Nov-12 13:50pm

v2

Add a Solution

Comments

[no name] 28-Nov-12 20:30pm

String.Format()

Slacker89 28-Nov-12 20:36pm

Could you please elaborate it by pointing out changes that I need to make. I am newbie in java script.

Zaf Khan 28-Nov-12 22:33pm

With reference to what Mathlab said in his comment above, you can find on this site an article here http://www.codeproject.com/Tips/201899/String-Format-in-JavaScript

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

ManojDhobale · Accepted Answer · 2012-11-28T18:19:00

C#

function addCommas(clientID)
                   {

                       var nStr = document.getElementById(clientID.id).value;

                       nStr += '';
                       x = nStr.split('.');
                       if (!x[0] )
                       {
                           x[0] = "0";

                       }
                       x1 = x[0];
                       if (!x[1] )
                       {
                           x[1] = "00";
                       }
                       x2 = x.length > 1 ? '.' + x[1] : '';
                       var rgx = /(\d+)(\d{3})/;
                       while (rgx.test(x1)) {
                           x1 = x1.replace(rgx, '$1' + ',' + '$2');
                       }

                       document.getElementById(clientID.id).value = x1 + x2;
                       return true;
                   }

                    function removeCommas(clientID)
                   {
                       var nStr = document.getElementById(clientID.id).value;
                       nStr = nStr.replace(/,/g, '');
                       document.getElementById(clientID.id).value = nStr;

                       $(clientID).select();

                       return true;
                   }

And call it on onfocus

XML

<asp:TextBox ID="txtbxId" runat="server" onfocus="removeCommas(this)" OnBlur="addCommas(this)"></asp:TextBox>

This will be format your number with commas and decimals
be carefull while accessing textbox value, remove commas before use