Add values of two TextBox and display result in third TextBox using jQuery

Hi @jameer

You can add two default textbox values using jquery like this

Jquery

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            $("[id*=TextBox3]").val(parseInt($("[id*=TextBox1]").val()) + parseInt($("[id*=TextBox2]").val()));
        });
    </script>

HTML

<div>
      <asp:TextBox ID="TextBox1" runat="server" Text="2"></asp:TextBox><br />
        <asp:TextBox ID="TextBox2" runat="server" Text="5"></asp:TextBox><br />
        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
    </div>