title: How to use session variable with NodeJs?
body: <p>I have the following NodeJS code:</p>
  
  <pre><code>  let sql = `SELECT box_id, cubby_id, occupied, comport
             FROM box
             WHERE longestDimension = ?
             AND LOWER(box_id) = LOWER(?)`;
  
      connection.query(sql, [boxSelectedDimension, boxSelectedValue] , function(err, rows, fields) {
          if (!err) {
              for(var i=0; i&lt; rows.length; i++) {
                  // Make the comparaison case insensitive
                  if (rows[i].occupied == `unoccupied`) {
                      console.log("free");
  
                      var comport = rows[i].comport;
                      var command = "open" + rows[i].cubby_id;
  </code></pre>
  
  <p>Essentially i would like to store the value of the <code>comport</code> and <code>command</code> variable in a session variable so that the value of these variable could be used in another router page in nodejs. </p>
  
  <p>I am not sure how to store and retrieve the session variable.</p>