projection not working with db.collection.find in mongo : <p>I have started to use mongodb just a day back and have encountered an issue.
I searched on net and stackoverflow for how to hide _id value in final answer and following the answers provided I tried to get my code run but still the _id part shows.</p>

<p>P.S.: I am using cloud9 as the ide.</p>

<pre><code>var mongo = require('mongodb').MongoClient;
mongo.connect('mongodb://localhost:27017/learnyoumongo', function(err, database) {
        if(err) throw err;
        const db = database.db('learnyoumongo');
        var parrots = db.collection('parrots');
        parrots.find({
            age: { $gt: +process.argv[2] }
        },{
            name: 1,
            age: 1,
            _id: 0
        }).toArray(function(err, docs){
            if(err) throw err;
            console.log(docs);
            database.close();
        });
});
</code></pre>
