插入MongoDB文档：mongo控制台查看插入到MongoDB文档中的内容

const MongoClient = require(‘mongodb‘).MongoClient;
const assert = require(‘assert‘);

const url = ‘mongodb://127.0.0.1:27017‘;

const dbName = ‘jhblog‘;
MongoClient.connect(url, {useNewUrlParser:true}, function (err, client) {
    assert.equal(null, err);
    console.log(‘Connected successfully to server‘);
    const db = client.db(dbName);

    db.collection("posts", function (err, collection) {
        var list = [
            {title: "马里奥", tag:"game"},
            {title: "node.js", tag:"it"}
        ];
        collection.insert(list, function (err, result) {
            assert.equal(null, err);
            client.close();
        });
    }); 
    
});