Read session variable in javascript?

Question

I am setting session variable in servlet and want to access that variable in javascript.

 ps = con.prepareStatement("select * from USERDETAILS where username=? and password=?");
 ps.setString(1, username);
 session.setAttribute("userName", username);

I tried these in javascript function. but it wasn't working...

var name = ${userName};
var name = '<%= Session["userName"] %>';

Answer 1

Seems you should be able to use getAttribute():

var name = '<%= session.getAttribute("userName") %>';

Though, this depends on Java running through the file to replace the embedded <%= ... %>, which probably won't be the case in separate .js files.