title: How to remove objects in an array by its value?
body: <p>I am using Node.js and this is my response of my routes.</p>
  
  <p><a href="https://i.stack.imgur.com/3hwnx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3hwnx.png" alt="enter image description here"></a></p>
  
  <p>I want to <strong>REMOVE</strong> the objects that have the value of <code>"existence":false</code>  and output the object that has value of "existence":true"</p>
  
  <p>This is my code so far. </p>
  
  <pre><code>schedule.get('/conference/schedule_participants/:circle/:confUid/:schedId', function(req, res) {
    if(req.schedId){
      getParticipants( req.params, function(contacts){
        results.contacts=contacts;
        res.send('response('+JSON.stringify(results.contacts)+')');
      }); 
    } else{
        res.send('response('+JSON.stringify(results.contacts)+')');
    }
  });
  </code></pre>