Session Attribute Values Fom JS

[Steve Dyke]

Have I been dreaming, totally crazy, or what?

I was under the impression that if I

had code in servlet like session.setAttribute("myVar");

Then in JS I could get that value with

var v1 = "${myVar}"

Am I wrong?

[Bear Bibeault]

You're not crazy, just a tad confused.

That's not JavaScript, that's JSP.

By the time the page gets to the browser, what it sees is:

var v1 = "Whatever the value of myVar was set to when the JSP executed on the server"

The substitution occurs on the server long before the HTML gets sent to the browser.

P.S. Don't forget your semi-colons!
[ December 19, 2008: Message edited by: Bear Bibeault ]

[Steve Dyke]

So if from my page I call a jQuery.getJSON("/myServlet") Then in that servlet do a session.setAttribute("myVar","1234"). Then back on the calling page call a function var v1 = "${myVar}" will fail.

What I want to do is from my navigation page(based on a users log on) set a global value for that session.

[Bear Bibeault]

You didn't mention Ajax.

Yeah, an Ajax call to another resource will have no effect on the page currently loaded.

If you want the value of a session scoped variable, you'll need to pass it back as part of the JSON data.