Summary of node.js Operation MongoDB Learning

Summary of node.js operation MongoDB Learning

This article mainly introduced the Node.js Operation MongoDB Learning Summary, this article has given the MongoDB to create the database, inserts the data as well as joins the MongoDB database and inquires into the data and so on code example, needs the friend may refer to under

　　First, preparatory work

1. Create the table to be read in MongoDB

Create DATABASE Mongotest

The code is as follows:

Use Mongotest;

Inserting data into the user table

The code is as follows:

Db.user.insert ({

Name: ' Flyoung ',

Age: ' 18 ',

Sex:true

});

2. Installation Node-mongodb-native

The code is as follows:

NPM Install MongoDB

　Ii. examples (Node.js read MongoDB)

Refer to Node-mongodb-native's documentation: https://github.com/mongodb/node-mongodb-native

The code is as follows:

var MongoDB = require (' MongoDB ');

var server = new MongoDB. Server ("127.0.0.1", 27017,{});//local 27017 port

New MongoDB. Db (' Mongotest ', server,{}). Open (function (error,client) {//database: Mongotest

if (error) throw error;

var collection = new MongoDB. Collection (client, ' user ');//table: User

Collection.find (function (error,cursor) {

Cursor.each (function (Error,doc) {

if (DOC) {

Console.log ("Name:" +doc.name+ "Age:" +doc.age);

}

});

});

});

Run:

The code is as follows:

Node Mongodbtest.js

Results:

The code is as follows:

Name:flyoung age:18

　　Three, write in the last words

Check and delete the demo reference document