JavaScript Introduction - JavaScript Tutorial For Beginners

What is JavaScript?

JavaScript is the world's most popular programming language.

JavaScript is the programming language that is one of the core technologies of the World Wide Web.

JavaScript is simple and easy-to-learn programming language as compared to other languages such as C++, Ruby, and Python.

This tutorial will teach you from the basics of JavaScript fundamentals to advanced concepts.

Today, JavaScript can run not only in the browser, but also on the server-side, and JavaScript is used by front-end and back-end web development.

The browser has an embedded engine sometimes called a “JavaScript virtual machine”.

Before Learning JavaScript what should you already know?

JavaScript is one of the 3 main languages that all web developers must learn:

1. HTML is a markup language to define the content of web pages.
2. CSS (Cascading Style Sheets) is a style sheet language to specify the layout of web pages.
3. JavaScript to program the behavior of web pages.

JavaScript Versions:

This tutorial covers every version of JavaScript:

• The Original JavaScript ES1 ES2 ES3 (1997-1999)
• The First Main Revision ES5 (2009)
• The Second Revision ES6 (2015)
• The Yearly Additions (2016, 2017, 2018)

What is the difference between JavaScript and ECMAScript?

JavaScript is a scripting language that complies to the ECMAScript standard. The ECMAScript standard is a design for a scripting language. That blueprint is implemented in JavaScript. Overall, JavaScript follows the ECMAScript standard as specified in ECMA-262.