Start with JavaSript

JavaScript - Introduction

If you have an ambition for becoming as a front-end developer, back-end developer or a full-stack developer, well knowledge of JavaScript will be a blessing for your future career.

JavaScript is one of the most used languages in today's world. World-renowned companies like Netflix, PayPal, Facebook are based on JavaScript. JavaScript is the foundation for Angular, React which popular frameworks in these days.

By using JavaScript, you can build Web/Mobile applications, Real-time Networking applications, Command-line tools, and even Games.

JavaScript is designed to run only in the browsers at its origins. So we can say, every browser which we are using today like Google Chrome, Mozilla FireFox, Edge, Safari has its own built-in JavaScript Engine.

• Mozilla FireFox : SpiderMonkey
• Google Chrome : v8

In 2009, Ryan Dahl built Node by using Chrome's v8. Node includes that JavaScript Engine which was written in C#. Therefore, we can run JavaScript programmes outside of the browsers. That is why we install Node.js in our computers before we run JS codes. Browsers and Node make the run-time environment for JS.

ECMAScript is the organization that responsible for JavaScript Language. So, ECMAScript is a specification and JavaScript is a programming language. ECMAScript releases new versions annually.

*JavaScript is not Java. They are completely two different languages.