session variables, accessing from client side java script

[ray well]

hi,

is a session varibale acessible for reading and writing from client side
javascript?

say i have a session variable called 'Session("Color")', and i want to
read/write to it, how would i refere to it say in a onclick event?

i would appreciate a snipet of code.

thanks

ray

[Marina]

No, it is not accessible from client side javascript. Session information is
stored on the server.

"ray well" <no****@nospam.com> wrote in message
news:%2***************@TK2MSFTNGP10.phx.gbl...

hi,

is a session varibale acessible for reading and writing from client side
javascript?

say i have a session variable called 'Session("Color")', and i want to
read/write to it, how would i refere to it say in a onclick event?

i would appreciate a snipet of code.

thanks

ray

[recoil]

If you wish to do so then you need to store the information in
something that is sent to the client side. The easiest way to do this
is to use an <input type="hidden" id="hdfMyColor" runat="server" />
then in your codebehind define the variable as such
or
Protected WithEvents hdfMyColor As
System.Web.UI.HtmlControls.HtmlInputHidden
Attach an event handler to the PreRender method and in there set the
HtmlInputHidden's value to the session value
Private Sub Page_Render(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.PreRender
hdfMyColor.Value = Session("Color")
End Sub
now you would simply go
<script type="text/javascript">
var colorHolder = document.getElementById("hdfMyColor");
var color = colorHolder.value;
</script>

[recoil]

Another method to doing that is to use RegisterClientScriptBlock to set
the variable manually through javascript code.
Private Sub Page_Render(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.PreRender
RegisterClientScriptBlock("ddd", "<script type='text/javascript'> var
color = '" + Session("Color") + "';</script>")
End Sub
This method may be alot easier

[William F. Robertson, Jr.]

No, Session variables reside on the server. If you want access, you will
need to postback to the server for your on click event.

bill

"ray well" <no****@nospam.com> wrote in message
news:%2***************@TK2MSFTNGP10.phx.gbl...

hi,

is a session varibale acessible for reading and writing from client side
javascript?

say i have a session variable called 'Session("Color")', and i want to
read/write to it, how would i refere to it say in a onclick event?

i would appreciate a snipet of code.

thanks

ray

[recoil]

Or use any of my provided methods

[William F. Robertson, Jr.]

How does either of your methods help ray meet his requirements of reading
and writing a session variable?

bill
"re****@community.nospam" <ma**********@gmail.com> wrote in message
news:11********************@f14g2000cwb.googlegrou ps.com...

Or use any of my provided methods