In this blog we will know how to put value in asp.net textbox from JavaScript.

Method-1

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Get_value_Textbox_javascript._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

<script type="text/javascript">

document.getElementById('<%=Test.ClientID%>').value;

</script>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:TextBox id="Test" Text="Welcome" runat="server"/>

</div>

</form>

</body>

</html>

Method-2

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Get_value_Textbox_javascript._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

<script type="text/javascript">

document.forms[0]['Test'].value;

</script>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:TextBox id="Test" Text="Welcome" runat="server"/>

</div>

</form>

</body>

</html>