Skip to main content

Nodejs and npm installation on linux and Windows



Nodejs is the JavaScript runtime build on  Chrome's open source v8 Java Script engine. The question is that why we should use Nodejs? Of course without knowing the reason of using the Node.js why anyone use, so the answer is very simple Node.js is the event based ecosystem, none blocking Input/Output that makes it lightweight and fast. Node.js ecosystem that is NPM is the world largest collection of open source.

What is the npm? Answer of this question it is the package manager for java script.

Below is the steps to install the Nodejs and npm installation on Linux Ubntu 16.4.

Step 1. Installing the NodeSource Nodejs v7.x repo


pawan@pawan:~/Desktop$ curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -

 
pawan@pawan:~/Desktop$ sudo apt-get install nodejs

Step 3. Check the installed version of Node.js


pawan@pawan:~/Desktop$ nodejs -v
v7.6.0

Step 4.Check installed version of npm


pawan@pawan:~/Desktop$ npm -v
4.1.2

 

Step 5. Create the Node.js HTTP server to test the installation


Using Node.js we can create the web server that can serve the request when you open it in your browser. You can check out the official Node.js website to check more on this for creating the web server, but in sort, we can create a file with the name of servertest.js as given below.
 var http = required('http');  
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello Node.js!!n');
}).listen(5001, "127.0.0.1");
console.log('Server running at http://127.0.0.1:5001/');

Step 6. Run the node.js server using below command


Here in above script, I used the port 5001 but you can use any as you want. After running the script you can open your browser on http:/127.0.0.1:5001/ and you can get the Hello Response from the server.

pawan@pawan:~/Desktop$ node servertest.js
Server running at http://127.0.0.1:5001/



test nodejs
Additionally, you can also run the node.js server in debug mode using below command.

pawan@pawan:~/Desktop$ node --debug servertest.js
Debugger listening on 127.0.0.1:5858
Server running at http://127.0.0.1:5001/


unselected package nodejs. (Reading database ... 264311 files and directories currently installed.) Preparing to unpack .../nodejs_7.6.0-1nodesource1~xenial1_amd64.deb ...

install nodejs

Step 7. Installing other module using npm


To install the library and package using npm use the below command

$ npm install packagename


Comments

  1. […] If you are getting node or npm command not found the error,  that means Node.js not installed on your machine. So for installation of Node.js and npm check out our earlier tutorial about how to install Node.js on Linux. […]

    ReplyDelete

Post a Comment

Popular posts from this blog

Flutter How to Start Android Activity from Flutter View

Flutter and Dart is an excellent combination for creating the UI, but for accessing the platform-specific service we need to open platform-specific activity. So lets in this article we will explore how to start an android activity and access the service from Flutter View. Create a Project for this Android Activity Flutter View Demo Create a Project From File menu select the New Flutter Project Enter the project name Select the AndroidX support and click on next After the above, we step click on Finish We will have the following project structure created. Create the Second Activity in Android Just go to the android folder and open it in separate windows. We will have the following project structure. Create the Activity Just right-click on the Kotlin folder and create a blank activity from the menu. If you create the activity then you may be required to upgrade the Gradle and do some import. So Just click on update and wait for the project s

WordPress Android App with REST API And Retrofit

Retrofit is the library which converts your JSON data into Java object. In this tutorial, we will learn about how to implement the Retrofit to create a WordPress Mobile App. As we all know, WordPress is the one of the biggest CMS (Content Management System) of the world. Wordpress full fill the requirements for all most every type of the website. So, in this tutorial, I am going to learn how to create an Android App using the WordPress REST API and Retrofit. What is Retrofit? If you want to know about Retrofit, I would like to give you just a simple one-line explanation of the Retrofit. It is a library which converts your REST HTTP request to Java interface. We will learn how we can do all these stuff using some very simple steps. Further, you can check the Retrofit Library here . So, In this tutorial, we will use the Retrofit to retrieve all post and there except ( A short Description of Post) form a WordPress website. Prerequisite for using the Retrofit for WordPress Android App Ther

How to Read and Write JSON data in Kotlin with GSON

Kotlin is now official language for Android development and it is well supported in Android Studio. So here in this tutorial, we are going to learn about how to read and write JSON data in Kotlin using GSON. If you would like to learn the java version of this tutorial check out the last tutorial " How to Read and Write JSON data using GSON ". Introduction In this tutorial, we will write two methods. In the first method, we will create a JSON file and in second method we will read the file and print in a text box.  If you like to know more about the basic entity of JSON you can check out Basic JSON entity here . What is JSON? JSON stands for J ava S cript O bject N otation JSON is a lightweight data-interchange format It is "self-describing" and easy to understand JSON is language independent and can we used in any language JSON Syntax Rules Data is in name/value pairs Data is separated by commas Curly braces hold objects Square brackets hold