How to Connect Node.js Application with MongoDB on CentOS

Install Node. js and MongoDB on CentOS

Step 1 – Add Node.js Yum Repository. First of all, You need to enable node. ...
Step 2 – Install Node.js and NPM. After adding yum repository in your system, install Node.js package. ...
Step 1 – Add MongoDB Yum Repository. ...
Step 2 – Install MongoDB Server. ...
Step 3 – Start MongoDB Service.

How does node JS connect to MongoDB?
How do I run a node JS project on CentOS?
How do I connect to a node js database?
How do I get MongoDB data from node JS?
Why is MongoDB used with node?
How does MongoDB connect to local?
How do I permanently open NPM?
How do I open node JS?
How do I start node js server in Linux?
Which database is best for Node JS?
Which database is best for JavaScript?
Is node js a front or back end?

How does node JS connect to MongoDB?

Before we begin, we need to ensure you've completed a few prerequisite steps.

Install Node. js. ...
Install the MongoDB Node. js Driver. ...
Create a free MongoDB Atlas cluster and load the sample data. ...
Get your cluster's connection info. ...
Import MongoClient. ...
Create our main function. ...
List the databases in our cluster. ...
Save Your File.

How do I run a node JS project on CentOS?

js runtime on the app server.

Step 1 — Installing Node. js. ...
Step 2 — Creating the Node. js Application. ...
Step 3 — Installing and Using PM2. Now we will install PM2, which is a process manager for Node. ...
Step 4 — Setting Up an Nginx Reverse Proxy Server.

How do I connect to a node js database?

To download and install the "mysql" module, open the Command Terminal and execute the following:

C:\Users\Your Name>npm install mysql.
var mysql = require('mysql');
Run "demo_db_connection.js" C:\Users\Your Name>node demo_db_connection.js.
Connected!
con. connect(function(err) if (err) throw err; console.

How do I get MongoDB data from node JS?

Using Node. js to query the MongoDB data

Connect to the MongoDB database.
Have a function that is expecting a string variable and a callback.
Search the database for the variable (a specific key of 'GroupName')
Create a JSON object if successful.
Catch the error if not successful.

Why is MongoDB used with node?

MongoDB represents the data as a collection of documents rather than tables related by foreign keys. This makes it possible for the varied types of data dealt over the internet to be stored decently and accessed in the web applications using Node. js.

How does MongoDB connect to local?

To connect to your local MongoDB, you set Hostname to localhost and Port to 27017 . These values are the default for all local MongoDB connections (unless you changed them). Press connect, and you should see the databases in your local MongoDB.

How do I permanently open NPM?

"scripts": "start": "forever start --minUptime 1000 --spinSleepTime 1000 app. js", "stop": "forever stop app. js" , Now you can use npm start and it will invoke forever automatically.

How do I open node JS?

Simple way to test nodeJS work in your system is to create a javascript file which print a message. Run the test.
...
Installation of NodeJS and NPM

Download the installer from NodeJS WebSite.
Run the installer.
Follow the installer steps, agree the license agreement and click the next button.
Restart your system/machine.

How do I start node js server in Linux?

To use http-server , install it with the command npm install http-server -g . Visit http://localhost:8081 to verify that the server is running and serves our file with the "Hello World" message. This Node. js serving option is useful for serving a simple app that does mainly front-end work.

Which database is best for Node JS?

Node. js supports all kinds of databases no matter if it is a relational database or NoSQL database. However, NoSQL databases like MongoDb are the best fit with Node.

Which database is best for JavaScript?

Try NoSQL databases, such as MongoDB , Apache CouchDB , or others. It often seems that since we use JavaScript, it's natural to go with JSON-document-based databases such as MongoDB.

Is node js a front or back end?

Node. js is a runtime environment that allows software developers to launch both the frontend and backend of web apps using JavaScript. Although JS underpins all the processes for app assembly, as a backend development environment, Node.