This article describes the operation of MongoDB database functions implemented by Nodejs. Share it for your reference, as follows:
mongodb_demo.js
/**
cnpm install mongodb
*/
var MongoClient = require('mongodb').MongoClient;
var DB_CONN_STR = 'mongodb://test:[email protected]:27017/test'; // The database is testvar insertData = function (db, callback) {
//Connect to table site var collection = ('site');
//Insert data var data = [{ "name": "Website 1", "url": "" }, { "name": "Website 2", "url": "" }];
(data, function (err, result) {
if (err) {
('Error:' + err);
return;
}
callback(result);
});
}
var selectData = function (db, callback) {
//Connect to table var collection = ('site');
//Query data var whereStr = { "name": 'Website 1' };
(whereStr).toArray(function (err, result) {
if (err) {
('Error:' + err);
return;
}
callback(result);
});
}
var updateData = function (db, callback) {
//Connect to table var collection = ('site');
//Update data var whereStr = { "name": 'Website 1' };
var updateStr = { $set: { "url": "https://" } };
(whereStr, updateStr, function (err, result) {
if (err) {
('Error:' + err);
return;
}
callback(result);
});
}
var delData = function (db, callback) {
//Connect to table var collection = ('site');
//Delete data var whereStr = { "name": 'Website 1' };
(whereStr, function (err, result) {
if (err) {
('Error:' + err);
return;
}
callback(result);
});
}
(DB_CONN_STR, function (err, db) {
if (err) {
(err);
return;
}
("The connection was successful!");
//1, Insert insertData(db, function (result) {
(result);
();
});
//2. Query data selectData(db, function (result) {
(result);
();
});
//3. Update data updateData(db, function (result) {
(result);
();
});
//4. Delete data delData(db, function (result) {
(result);
();
});
});
run:
node mongodb_demo.js
I hope this article will be helpful to everyone's nodejs programming.