function aticleInsert(dbname,collection,document,callback){ var db = mongoClient.db(dbname); db.collection(collection).insertOne(document).then((data)=>{ callback(data) },(err) => { callback(err) }) }
function articleDelete(dbname,collection,sql,callback){ var db = mongoClient.db(dbname); db.collection(collection).removeOne(sql).then(data => { callback(data) }).catch(error => { callback(error) }) }
function articleUpdate(dbname,collection,sql,update,callback){ var db = mongoClient.db(dbname); db.collection(collection).updateOne(sql,update).then(data => { callback(data) }).catch(error => { callback(error) }) }