section28.4.md

Section 28.4: Insert a document

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017/test';

MongoClient.connect(url, function (err, db) {
  if (err) throw new Error(err);
  
  db.collection('myCollection').insertOne({ // Insert method 'insertOne'
    "myFirstDocument": {
      "greetings": "Hellu",
      "farewell": "Bye"
    }
  }, function (err, result) {
    if (err) throw new Error(err);
   
    console.log("Inserted a document into the myCollection collection!");
    db.close(); // Don't forget to close the connection when you are done
  });
});

Collection method insertOne()

db.collection(collection).insertOne(document, options, callback)

Argument	Type	Description
collection	string	A string specifying the collection
document	object	The document to be inserted into the collection
options	object	(optional) Optional settings (default: null)
callback	Function	Function to be called when the insert operation is done

The callback function takes two arguments

• err : Error - If an error occurs the err argument will be defined
• result : object - An object containing details about the insert operation