Get label value
var amount = document.getElementById("<%=lblAmount.ClientID %>").innerHTML
Get label value
var name = document.getElementById("<%=txtUserName.ClientID %>").value;
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<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Get Asp.net Textbox Value in JavaScript</title>
<script type="text/javascript">
function getvalues() {
var name = document.getElementById("<%=txtUserName.ClientID %>").value;
var amount = document.getElementById("<%=lblAmount.ClientID %>").innerHTML;
alert("Textbox Value: "+name+"\n" +"Label Value: "+ amount);
return false
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
UserName:<asp:TextBox ID="txtUserName" runat="server" /><br />
Amount:<asp:Label ID="lblAmount" runat="server" Text="10000"/><br />
<asp:Button ID="btnValidate" runat="server" Text="Get Values" OnClientClick="javascript:getvalues();" />
</div>
</form>
</body>
</html>
