Introduction To Node.js

New to Node.js? This  article will help you to get to the basics of Node.js.



What is Node.js?

  • Node.js is an open source server framework and allows you to run JavaScript on the server.
  • Its almost free to use
  • It can run in many platforms 
    • Widows
    • Linux
    • Mac and so on.
  • Its package ecosystem is called 'npm'.
  • It can generate dynamic page content
  • Also can obtain the CRUD functionalities
  • Very Fast.
  • Good for real-time services like chats.

Lets Get started ....!

Here I use Atom as my text editor. You can download and install it.Also you should download Node.js from the Node.js Official Website .

After installing Node.js open your command prompt and type the following command to get to know the version
node -v
Now create a project folder in your root folder.

Hello World! 

Now lets type our first Node.js command to print Hello World! To  this open a js file called test,js in your project folder and type the following command.
console.log('Hello World!');

Now to run the file get the file path from the command line and type the following code.
node test
In here my file name is test.js. So I used test which is my file name. Then you will get an output as below.






Comments

Post a Comment

Popular posts from this blog

Installing MongoDB into Windows

Image
This article will help you to get to know the way of installing MongoDB in to Windows. Lets get started. Step 01 : Download  MongoDB  from the website Step 02: Install it by following the steps in the setup. Step 03 : Move on to the bin folder in  MongoDB folder Go through  C:\Program Files\MongoDB\Server\3.6\bin to get the bin file. This path may change with the version that you are using.The window will looks like below. Step 04: Install mongo and mongod applications init. Open the command line in the bin folder to install mongod There it shows  an error that a database is not found.Here you need to create folder called data in c:/ and inside it another folder called db to store any information stored in Mongo. Now again try the mongod command and see. You will get an output like this which means that mongo is waiting for connections. To install mongo as same we did above type mongo in the command line.Then type db and...
Read more

Microservice Architecture

Image
Microservice Architecture or simply Microservices, an emerging technology grown popular in recent years which is used in software development.The article will help you to get to know about Micro Services. This architecture is helpful for the deployment of large complex applications also support for range of platforms and devices like web,android,Internet of Things and wearables .  The large complex applications are deployed into small modules which runs separately as unique processes.So basically using Microservices you can easily use any of the technologies as the development is done separately as a module.  The communication among the modules are done considering the requirements of the business goal. Here HTTP/REST with JSON is mostly used. Examples  Netflix eBay Amazon Twitter PayPal Soundcloud   and many of the other applications have now moved to microservices from Monolithic Architecture where they have decompose...
Read more

How to Add Firebase to your Android Project

Image
From the previous article I gave you a brief introduction on Firebase. This article will help you to know how to add Fire base to your Android project.Lets get started . Go to your firebase dashboard for the android project that we created in the last article.You would get a similar interface as below. But this may be changes with time. On the dashboard there is an option to select Add firebase to your Android app.Select it and you will get similar window as given below. Here you will be asked the Android package name which is the package name of your added Android project. Add it there. com.example.user.myandroidapp is my package name and you can get it from MainActivity.java file. Next you will be asked to fill the  Debug signing certificate SHA-1   . This is optional but it is good to add it.  To add this go to your android studio and click the button Gradle in the top right.You will get a similar window given below.Click signingReport So...
Read more