test2

gistfile1.txt

var mongo = require("mongodb"), db = new mongo.Db("test", new mongo.Server("localhost", mongo.Connection.DEFAULT_PORT), {strict: true})

db.open(function(err, db) {
	if(err) {
		throw new Error(err)
	} else {
		db.collection("testing", function(err, collection) {
			collection.find({}).limit(1).toArray(function(err, users){
				user = users[0]
				if(err) {
					console.log(err.message)
				} else if(user) {
					user.friends.splice(1,1)
					collection.save(user, function(err, doc){
						if(err) {
							console.log(err.message)
						}
					})
				}
			})
		})
	}
})