title: How can I access mongodb count results in nodejs with a callback?
body: <p>How do you access mongodb count results in nodejs so the result can be accessible to the asynchronous request? I can get the result and update the database but the asynchronous request fails to access the vars or the vars are empty and the vars appear to be updated when the next asynchronous request is made. The request must not be waiting for the query to finish and the next request is filled with the previous request's variables.</p>
  
  <pre><code>testOne.increment = function(request) {   
      var MongoClient = require('mongodb').MongoClient,
          format = require('util').format;
      MongoClient.connect('mongodb://127.0.0.1:27017/bbb_tracking', function(err, db) {
      if (err) throw err;
      collection = db.collection('bbb_tio');
          collection.count({vio_domain:dom}, function(err, docs) {
      if (err) throw err;                                     
      if (docs &gt; 0) {
              var vio_val = 3;                                        
          } else {
              var vio_val = 0;                    
          }                   
          if (vio_val === 3) {
                  event = "New_Event";
          var inf = 3;
              }                                       
          db.close();
  
          console.log("docs " + docs);
          });       
     });                    
  };
  </code></pre>
  
  <p>In the above, even when the vars are set in scope they are not defined asynchronously. Can I get some guidance on structuring this properly so the vars are populated in the callback.  Thank you!     </p>