I am using C# mvc Application. I have created a session in the Controller class like this
string description = accessDB.LookupSomeString(key, ImpDate);
this.Session["description"] = description;
in the View, We access the session value and store it in a variable, like this (this is within an $.ajax, but I think it should work within any jquery)
var Sessiondescription = '@Session["description"]';
alert(Sessiondescription);