Disparities between Node.js and JavaScript


JavaScript has been around for a long time. A popular client-side coding language that is designed to be used in a web browser, it has been popularly used by developers and designers for many years. Over time, there have been quite a significant number of frameworks and tools built around JavaScript for ease of use and added functionality. One such tool which has become immensely popular among developers the world over is Node.js.
Node.js is basically JavaScript with a different purpose. It does not have JavaScript essentials like the DOM or Document Object Module which deals with particular elements on a webpage. Nor does it have browser APIs. They are both single-thread tools which are event driven. There are, however, major differences between the two.
In order to make a productive contribution to your development projects, it is vital that you are aware of these subtle differences. While JavaScript is a client-side language, Node.js brings the server-side programming and development opportunities which allow developers to work with a single programming language for both their front-end and back-end requirements. Some important points of difference are outlined below –

  • While JavaScript runs from a browser and allows manipulation of webpage elements, Node.js can be run from the command line without a browser. It uses Chrome’s V8 engine- Google Chrome’s JavaScript engine.

  • JavaScript is strictly a client-side resource which operates from a browser inside a sandbox. Node.js, on the other hand, can be used as a server-side resource, enabling developers to use JavaScript on the server as well as on the client-side.

  • Node.js places greater focus on input and output interactions. This makes it a great tool for designing backend APIs. JavaScript cannot be used for server-side application and therefore has no implication when it comes to designing backend APIs.

  • Node.js also comes with the node package manager- an application dependency manager which developers can use to interface with various resources and utilize code snippets from other developers.

With these notable differences, it is clear that the scope of these two coding languages is vastly different. While JavaScript is good for client-side operations and dynamically making changes to a webpage by using DOMs, Node.js is essentially a server-side resource with which developers can create a solid backbone for their web applications.

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