JavaScript ES6 (ECMAScript 2015) introduced a ton of new features that modernize the language. Let's dive into some key highlights!
🔥 New Features in ES6
📌 Let & Const
- Block-scoped variables with
let
andconst
- Avoids issues with
var
(e.g., hoisting, redeclaration)
let x = 10;
const y = 20;
🎯 Arrow Functions
- Concise syntax for function expressions
- Preserves
this
context from outer scope
const add = (a, b) => a + b;
📦 Modules
import
andexport
for modular code- Organize code across files and projects
// math.js
export function square(x) { return x * x; }
// main.js
import { square } from './math.js';
🧱 Classes
- Simplified object-oriented programming
- Uses
class
keyword and constructor
class Person {
constructor(name) {
this.name = name;
}
}
📚 Recommended Reading
Want to explore more? Check out our ES6 Advanced Topics guide for deeper insights!