undefined value in Alert window

Phil · Mar 8, 2007

Hi,

The Alert window appears but the value is "undefined".
I tried two ways
What don't i see here?
Thanks
Phil

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server"><title>Untitled Page</title></head>
<body> <form id="form1" runat="server">
<asp:Label ID="label1" runat="server" text="ok" Font-Bold="True"
forecolor="lightsteelblue"></asp:Label>
<asp:Button ID="Button1" runat="server" OnClientClick="test()" />

<script language="javascript" type="text/javascript">
function test()
{
var x = document.getElementById("label1").text;
//var x = document.getElementById('<%=label1.ClientID%>').text;
doesn't work
alert(x)
}
</script> </form> </body></html>

Teemu Keiski · Mar 8, 2007

Label (rendered as <SPAN> at client) does not have text property at
client-side dom. What if you write for example:

var x = document.getElementById("label1").innerText;

Evertjan. · Mar 8, 2007

Phil wrote on 08 mrt 2007 in microsoft.public.scripting.jscript:

Hi,

The Alert window appears but the value is "undefined".
I tried two ways
What don't i see here?
Thanks
Phil

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server"><title>Untitled Page</title></head>
<body> <form id="form1" runat="server">
<asp:Label ID="label1" runat="server" text="ok" Font-Bold="True"
forecolor="lightsteelblue"></asp:Label>
<asp:Button ID="Button1" runat="server" OnClientClick="test()" />

<script language="javascript" type="text/javascript">
function test()
{
var x = document.getElementById("label1").text;
//var x = document.getElementById('<%=label1.ClientID%>').text;
doesn't work
alert(x)
}
</script> </form> </body></html>

..text is not a DOM extention, perhaps .value.

However perhaps better ask in a dotnet group.

<microsoft.public.dotnet.framework.aspnet>

Anthony Jones · Mar 8, 2007

Phil said:
Hi,

The Alert window appears but the value is "undefined".
I tried two ways
What don't i see here?
Thanks
Phil

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server"><title>Untitled Page</title></head>
<body> <form id="form1" runat="server">
<asp:Label ID="label1" runat="server" text="ok" Font-Bold="True"
forecolor="lightsteelblue"></asp:Label>
<asp:Button ID="Button1" runat="server" OnClientClick="test()" />

<script language="javascript" type="text/javascript">
function test()
{
var x = document.getElementById("label1").text;
//var x = document.getElementById('<%=label1.ClientID%>').text;
doesn't work
alert(x)
}
</script> </form> </body></html>

I'm not up on ASP.NET but the first thing I would check is whether the
ID="label1" actually ends up on an element in the output HTML. Use view
source in your browser and do a text search.

My guess is that it isn't and that you need to repost to
microsoft.public.dotnet.framework.aspnet to get someone to explain.

Phil · Mar 8, 2007

Thanks

Anthony Jones said:
I'm not up on ASP.NET but the first thing I would check is whether the
ID="label1" actually ends up on an element in the output HTML. Use view
source in your browser and do a text search.

My guess is that it isn't and that you need to repost to
microsoft.public.dotnet.framework.aspnet to get someone to explain.

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undefined value in Alert window

Phil

Teemu Keiski

Evertjan.

Anthony Jones

Phil

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