JavaScript Tutorial

JavaScript ES6

JavaScript Tutorial

JavaScript ES6 (ECMAScript 2015)

ES6 introduced modern features to JavaScript, making code cleaner, more readable, and easier to maintain.

let and const

let – Block-scoped variable
const – Block-scoped constant (cannot reassign)

Arrow Functions

Shorter syntax for functions
Lexical this binding

Template Literals

Use backticks ` for strings
Supports interpolation ${variable} and multi-line strings

Default Parameters

Destructuring Assignment

Arrays

Objects

Spread and Rest Operators

Spread (...) – Expand array/object

Rest (...) – Collect remaining items

Enhanced Object Literals

Classes

Modules (Export / Import)

export.js

import.js

Promises (Already Covered)

Other ES6 Features

for...of loop
Map and Set objects
Symbol type
default + named exports in modules
includes() for strings and arrays

Summary Table

Feature	Description	Example
let/const	Block-scoped variables	`let x = 10; const y = 5;`
Arrow Function	Shorter function syntax	`const f = a => a*2;`
Template Literals	Interpolation & multi-line	`Hello ${name}`
Destructuring	Extract array/object	`let {name} = user;`
Spread/Rest	Expand/collect	`[...arr]` / `function(...args)`
Classes	Object-oriented syntax	`class Person {}`
Modules	Import/export code	`import {x} from './file.js'`

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