JavaScript Internals (521 Qs)•Part 5: ES6+ Modern Syntax, Classes, Modules & Destructuring (254 - 328)
What is the difference between java and javascript
Both are totally unrelated programming languages and no relation between them. Java is statically typed, compiled, runs on its own VM. Whereas JavaScript is dynamically typed, interpreted, and runs in a browser and nodejs environments. Let's see the major differences in a tabular format,
| Feature | Java | JavaScript |
|---|---|---|
| Typed | It's a strongly typed language | It's a dynamic typed language |
| Paradigm | Object oriented programming | Prototype based programming |
| Scoping | Block scoped | Function-scoped, block scoped since ES6 |
| Concurrency | Thread based | event based |
Practical Code Example
javascript
// Java vs JavaScript differences:
// Java: Statically typed, runs on JVM, multi-threaded concurrency model
// JavaScript: Dynamically typed, runs in browser/Node engine, single-threaded event loop
// JS dynamic typing:
let data = 100;
data = "now a string"; // Valid in JavaScript, illegal in Java