node.js operation mongodb learning summary_node.js

1. Preparation

1. Create the table to be read in mongodb

Create database mongotest

Copy code The code is as follows:

use mongotest;

Insert data into the user table

Copy code The code is as follows:

db.user.insert({
name:'flyoung',
age:'18',
sex:true
});

2. Install node-mongodb-native

Copy code The code is as follows:

npm install mongodb

2. Example (node.js reads mongodb)

Refer to the documentation of node-mongodb-native: https://github.com/mongodb/node-mongodb-native

Copy code 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:

Copy code The code is as follows:

node mongodbTest.js

Result:

Copy code The code is as follows:

name:flyoung age:18

3. The last words

Demo reference document for adding, deleting, modifying and checking