Nodejs MongoDB Insert Documents

var mdb = require('mongodb').MongoClient;  
var con = "mongodb://localhost:27017";  
var data =  [     
{ name: "xyz", age: "11", address: "delhi"},  
{ name: "abc", age: "12", address: "Goa"},  
{ name: "efg", age: "13", address: "madras"},  
{ name: "pink", age: "14", address: "cochin"}  
];  

mdb.connect(con,{ useNewUrlParser: true, useUnifiedTopology: true }, function(err, db) {  
if (err) throw err;  
var dbase = db.db("employee");

dbase.collection("employees").insertMany(data, function(err, res) {  
if (err) throw err;  
console.log("Total Number of records inserted: " + res.insertedCount);  
db.close();  
});  


});