title: How to access Session variables and set them in javascript?
body: <p>In code-behind I set <code>Session</code> with some data.</p>
  
  <pre><code>Session["usedData"] = "sample data";
  </code></pre>
  
  <p>And the question is how can I get the Session value(in my example; "sample data") in javascript and set <code>Session["usedData"]</code> with a new value?</p>