JavaScript

#!/usr/bin/env node

function helloWorld() {
    console.log("This is JavaScript");
}

helloWorld();

JavaScript is a high-level, single-threaded, interpreted language, that is most known for building websites. Its creator, Brendan Eich’s, original goal was to add an “easy to learn” scripting language to the Netscape Browser. Nowadays JavaScript is considered a fully-featured language that continues to grow according to the ECMA Standard 🌐.

It is most well-known for building “front-end” web applications, because it is the only language (other than WebAssembly 🌐) that is run natively in web browsers (like Mozilla FireFox or Google Chrome).

JavaScript works in conjunction with HTML and CSS to provide complete websites.

• see HTML 🗒️
• see CSS 🗒️

Atwood’s Law

”Any application that can be written in JavaScript, will eventually be written in JavaScript.”

• Jeff Atwood (Cofounder of StackOverflow)

JavaScript can also:

• create server side applications with Node.js 🌐.
• create mobile applications with React Native 🌐 or Ionic 🌐.
• create desktop applications with Electron 🌐.

This is because JavaScript is an interpreted scripted language, but tools like the V8 engine 🌐 in Google Chrome, use a “Just-In-Time(JIT)” 🌐 compiler to convert it to machine code at runtime.

NPM

JavaScript has its own package manager, called NPM, specifically for the runtime environment Node.js.

• aka “Node Package Manager”
• NPM Official Site 🌐

More External Links

• Official Site 🌐
• JavaScript Learn Docs 🌐