What is JavaScript?

Hi, I’m Kishen Deemud. In this article I will give you an introduction about JavaScript.



JavaScript is one of the most popular and widely used programming languages in the word right now. It’s growing faster than any other programming languages and big companies like Netflix, Paypal build entire application around JavaScript.


Most commonly used programming languages


So it’s a great opportunity to get a good job out of learning JavaScript. You can work as a

  • Front-end Developer
  • Back-end Developer
  • Full-stack Developer

What can you do with JavaScript?


These days we can build,

  • Web/Mobile Apps
  • Real-time Networking Apps
  • Command-line Tools
  • Games

using JavaScript.


Where dose JavaScript code run?


JavaScript was originally designed to run only browsers. So every browser has what we call JavaScript engine can execute JavaScript code.


Browser - Engine


In 2009 very clever engineer call Ryan Dahl took the open-source JavaScript engine in Chrome and embedded it inside a C++ program. He call that program Node.


Ryan Dahl


So Node is a C++ program that include Google V8 JavaScript engine. Now with this we can run JavaScript code outside our browser. So we can pass our JavaScript code to Node for execution. and this means, with JavaScript we can build the back-end for our web and mobile applications.



So JavaScript code can be run inside our browser or in Node. Browsers and Node provide a runtime environment for our JavaScript code.


So I hope you understand my explanation about JavaScript. Thank you!

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