🔑 Variables: let & const
Always prefer const for immutable variables and let for mutable ones.
Avoid var due to function scope and hoisting quirks.
👉 Learn more about variable declarations
📌 Destructuring Assignments
Simplify object and array extraction with destructuring:
const { name, age } = user;
const [first, second] = ['a', 'b'];
Use it to make code more readable and concise.
👉 Explore destructuring in depth
🔄 Arrow Functions
Use arrow functions for shorter syntax and lexical this:
const add = (a, b) => a + b;
Avoid using function keywords when possible.
👉 Arrow functions explained
🧱 Modules & Imports
Organize code with ES6 modules:
import { fetchData } from './api';
Always use import instead of require for modern projects.
👉 Module system guide
📦 Default Parameters
Set default values for function parameters:
function greet(name = 'Guest') { console.log(name); }
Improves code flexibility and reduces null checks.
👉 Function parameters tutorial