ASP.NET read value of javascript variable

[Elliot]

My C# page contains a java script that create a variable named txt.
How can I get the value of txt when pressing a ASP.NET button?
Any idea would be appreciated.

[Mark Rae [MVP]]

"Elliot" <el************@hotmail.co.ukwrote in message
news:4B**********************************@microsof t.com...

My C# page contains a java script that create a variable named txt.
How can I get the value of txt when pressing a ASP.NET button?
Any idea would be appreciated.

Easiest way is to define a hidden field and copy the value of the variable
into it on postback.

http://www.google.co.uk/search?sourc...+OnClientClick
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Elliot]

Thanks for your idea, Mark.
"Mark Rae [MVP]" <ma**@markNOSPAMrae.netwrote in message
news:uU*************@TK2MSFTNGP04.phx.gbl...

"Elliot" <el************@hotmail.co.ukwrote in message
news:4B**********************************@microsof t.com...

>My C# page contains a java script that create a variable named txt.
How can I get the value of txt when pressing a ASP.NET button?
Any idea would be appreciated.

Easiest way is to define a hidden field and copy the value of the variable
into it on postback.

http://www.google.co.uk/search?sourc...+OnClientClick
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[siccolo]

On Jul 7, 2:06*pm, "Elliot" <[e-mail]:

My C# page contains a java script that create a variable named txt.
How can I get the value of txt when pressing a ASP.NET button?
Any idea would be appreciated.

something like this:
<input type="hidden" runat="server" id="hiddenVariableValue" />
<asp:Button ..... onClientClick="return copy_variable();" />

where
<script>
var hidden_field_id = "<%=hiddenVariableValue.ClientID%>";
function copy_variable()
{
document.getElementById(hidden_field_id ).value =
your_txt_value_here;
return true;
}
</script>

more at http://www.siccolo.com/articles.asp