🔰 JS Interview Q/A Post Pdf 🔗

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Complete JavaScript Road Map🔥

A-Z JavaScript👇

1.Variables
↳ var
↳ let
↳ const

2. Data Types
↳ number
↳ string
↳ boolean
↳ null
↳ undefined
↳ symbol

3.Declaring variables
↳ var
↳ let
↳ const

4.Expressions
Primary expressions
↳ this
↳ Literals
↳ []
↳ {}
↳ function
↳ class
↳ function*
↳ async function
↳ async function*
↳ /ab+c/i
↳ string
↳ ( )

Left-hand-side expressions
↳ Property accessors
↳ ?.
↳ new
↳ new .target
↳ import.meta
↳ super
↳ import()

5.operators
↳ Arithmetic Operators: +, -, *, /, %
↳ Comparison Operators: ==, ===, !=, !==, <, >, <=, >=
↳ Logical Operators: &&, ||, !

6.Control Structures
↳ if
↳ else if
↳ else
↳ switch
↳ case
↳ default

7.Iterations/Loop
↳ do...while
↳ for
↳ for...in
↳ for...of
↳ for await...of
↳ while

8.Functions
↳ Arrow Functions
↳ Default parameters
↳ Rest parameters
↳ arguments
↳ Method definitions
↳ getter
↳ setter

9.Objects and Arrays
↳ Object Literal: { key: value }
↳ Array Literal: [element1, element2, ...]
↳ Object Methods and Properties
↳ Array Methods: push(), pop(), shift(), unshift(),
splice(), slice(), forEach(), map(), filter()

10.Classes and Prototypes
↳ Class Declaration
↳ Constructor Functions
↳ Prototypal Inheritance
↳ extends keyword
↳ super keyword
↳ Private class features
↳ Public class fields
↳ static
↳ Static initialization blocks

11.Error Handling
↳ try,
↳ catch,
↳ finally (exception handling)

ADVANCED CONCEPTS
--------------------------

12.Closures
↳ Lexical Scope
↳ Function Scope
↳ Closure Use Cases

13.Asynchronous JavaScript
↳ Callback Functions
↳ Promises
↳ async/await Syntax
↳ Fetch API
↳ XMLHttpRequest

14.Modules
↳ import and export Statements (ES6 Modules)
↳ CommonJS Modules (require, module.exports)

15.Event Handling
↳ Event Listeners
↳ Event Object
↳ Bubbling and Capturing

16.DOM Manipulation
↳ Selecting DOM Elements
↳ Modifying Element Properties
↳ Creating and Appending Elements

17.Regular Expressions
↳ Pattern Matching
↳ RegExp Methods: test(), exec(), match(), replace()

18.Browser APIs
↳ localStorage and sessionStorage
↳ navigator Object
↳ Geolocation API
↳ Canvas API

19.Web APIs
↳ setTimeout(), setInterval()
↳ XMLHttpRequest
↳ Fetch API
↳ WebSockets

20.Functional Programming
↳ Higher-Order Functions
↳ map(), reduce(), filter()
↳ Pure Functions and Immutability

21.Promises and Asynchronous Patterns
↳ Promise Chaining
↳ Error Handling with Promises
↳ Async/Await

22.ES6+ Features
↳ Template Literals
↳ Destructuring Assignment
↳ Rest and Spread Operators
↳ Arrow Functions
↳ Classes and Inheritance
↳ Default Parameters
↳ let, const Block Scoping

23.Browser Object Model (BOM)
↳ window Object
↳ history Object
↳ location Object
↳ navigator Object

24.Node.js Specific Concepts
↳ require()
↳ Node.js Modules (module.exports)
↳ File System Module (fs)
↳ npm (Node Package Manager)

25.Testing Frameworks
↳ Jasmine
↳ Mocha
↳ Jest

------------------- END-------------------

Some Good Resources To Learn JavaScript
1.Documentation

Mozilla MDN Web Docs
developer.mozilla.org/en-US/docs/Web…
DevDocs
devdocs.io/javascript/

2. Useful Channel's

Javascript Courses: https://t.me/javascript_courses
Programming Resources: https://t.me/programming_guide
FreeCodeCamp: youtube.com/c/FreeCodeCamp

Hope it helps 😊🌱

Here’s how old these companies are:

🇨🇳 TikTok: 8 years
🇺🇸 OpenAI: 9 years
🇺🇸 Zoom: 14 years
🇺🇸 Instagram: 14 years
🇺🇸 Airbnb: 17 years
🇺🇸 Twitter / X: 19 years
🇺🇸 Facebook: 21 years
🇺🇸 Tesla: 22 years
🇺🇸 Google: 26 years
🇺🇸 Netflix: 27 years
🇺🇸 Amazon: 31 years
🇺🇸 Apple: 49 years
🇺🇸 Microsoft: 50 years
🇯🇵 Sony: 79 years
🇮🇳 Tata Motors: 80 years
🇰🇷 Samsung: 87 years
🇺🇸 Boeing: 109 years
🇩🇪 BMW: 109 years
🇺🇸 IBM: 114 years
🇮🇹 Fiat: 126 years
🇫🇷 Renault: 126 years
🇺🇸 Coca-Cola: 133 years
🇯🇵 Nintendo: 135 years
🇯🇵 Toshiba: 150 years
🇫🇮 Nokia: 160 years

Who read in this AI world ..

Meta sells → Vision, not Technology.
Apple sells → Trends, not phones.
Ferrari sells → Status, not cars.
Nike sells → Motivation, not shoes.
Disney sells → Memories, not movies.
Amazon sells → Convenience, not products.
McDonald’s sells → Happiness, not burgers.

Sell the emotion and not the service.