Install mongodb module in nodejs

Node.js is one of the standard platforms for modern web applications. As developers, we often work with non-relational databases like MongoDB. In order to operate MongoDB conveniently, we need to install the mongodb module in Node.js.

This article will introduce how to install the mongodb module in a Node.js environment, including how to install it on Windows and Linux systems. We'll guide you through the installation process step by step.

Before you start, you need to make sure you have Node.js and MongoDB installed, otherwise please install them first. The Node.js installation is available from the official website , while the MongoDB installation is available from MongoDB’s official website .

Installing the mongodb module on Windows systems

1. Open a command prompt or PowerShell terminal window and run the following command to install the mongodb module into the global scope:

npm install -g mongodb

2. After the installation is complete, you can enter the following command in the command prompt or PowerShell terminal window to verify whether the installation has been successful:

mongo --version

If the installation is successful, the version of mongodb will be output Number.

3. Using the mongodb module in Node.js applications. Add the following code to the application to test whether the installation is successful:

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017/mydb';

MongoClient.connect(url, function(err, db) {
  if (err) throw err;
  console.log('Database created!');
  db.close();
});

This will output a "Database created!" message in the console, indicating that it has successfully connected to the MongoDB database and can perform other operations. .

Install the mongodb module on Linux system

For Ubuntu 16.04 or other Debian system versions, please perform the following steps:

1. Open the terminal and run the following command to install mongodb module:

sudo npm install -g mongodb

2. After the installation is complete, you can enter the following command in the terminal window to verify whether it has been successfully installed:

mongo --version

If the installation is successful, then The version number of mongodb will be output.

3. Using the mongodb module in Node.js applications. Add the following code to the application to test whether the installation is successful:

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017/mydb';

MongoClient.connect(url, function(err, db) {
  if (err) throw err;
  console.log('Database created!');
  db.close();
});

This will output a "Database created!" message in the console, indicating that it has successfully connected to the MongoDB database and can perform other operations. .

Summary

Now you know how to install the mongodb module in a Node.js environment and can use it in your application to connect to a MongoDB database. Whether you are on a Windows or Linux system, installation is very simple, just follow the steps in this article.

During the development process, you may also encounter other problems. Please check out the official documentation for MongoDB and Node.js for more information and sample code. Hope this article will be helpful to you.

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