NodeJS >> Node.js VS JavaScript

2022-05-18 NodeJS

Table of Contents

In this article, we will compare Node.js with JavaScript.

Node.js

What is Node.js?

Node.js

Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine. Chrome V8 is a JavaScript engine that is used by Chrome and other browsers writen by C++.

It is designed based the non-blocking I/O model of the event-driven programming style so it is suitable for building scalable network applications with event-driven I/O. It can handle a large number of requests per second with a single thread concurrently.

Advantages of Node.js

  • It is non-blocking I/O model of the event-driven programming style, so it is suitable for building scalable network applications with event-driven I/O.
  • It is lightweight, so it is suitable for embedded applications.
  • It is cross-platform, so you only write once and run on all platforms.
  • It is fast, so it is suitable for real-time applications.
  • It is easy to install and use, so it is suitable for developers who are new to programming.
  • It is easy to learn, if you are familiar with JavaScript, it is easy to learn Node.js.
  • It is open source, so it is free to use.

Disadvantages of Node.js

  • Its consitency is not guaranteed, so it is not recommended to use it in a frequently changing environment.
  • It is not multi-threaded, so it is not suitable for computing intensive tasks.
  • It lacks well-designed libraries, so it is difficult for developers to implement some basic features.

Node.js is suitable for?

  • Games with multi-player support
  • Collaborative applications with multiple users
  • Application with streaming data
  • Chat applications
  • Web API
  • Real-time applications

Who use Node.js

A lot of big companies use Node.js.

  • Uber
  • Netflix
  • Trello
  • Medium
  • Walmart
  • eBay
  • PayPal
  • LinkedIn
  • Mozilla

What is JavaScript?

Node.js

JavaScript (often abbreviated JS) is a programming language (scripting language) that is used to create dynamic web pages. JavaScript is a client-side scripting language and it is interpreted by browsers. JavaScript is a high-level, dynamic, untyped, and interpreted programming language.
JavaScript was invented by Brendan Eich in 1995. It was developed for Netscape 2, and became the ECMA-262 standard in 1997. JavaScript conforms to the ECMAScript specification.

Advantages of JavaScript

  • It is easy to learn, if you are familiar with C, it is easy to learn JavaScript.
  • It is very popular, so there are many communities and learning stuff.
  • It is cross-platform, so you can use it on all modern browsers.
  • It is a web-oriented language, so it is suitable for web development.
  • It is supported by a lot of global companies, such as Google, Facebook, and Microsoft.
  • There are a lot of open source projects written by JavaScript.
  • There are a lot of popular libraries written by JavaScript.

Disadvantages of JavaScript

  • There are many security risks because it is a client-side scripting language.
  • The Javascript version and api are different on different browsers becuase the support speed and implemented features are different on different browsers.
  • It is difficult to debug sometimes.
  • It has a lot of versions, so it is hard to maintain sometimes.

JavaScript is suitable for?

  • Web applications (adding interactive features to web pages)
  • Mobile applications (with such as React Native)
  • Desktop applications (with such as Electron)
  • Games (especially web page games)

Who use JavaScript?

Almost all companies use JavaScript.
Because at least they need use JavaScript in their official websites. :)

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