JavaScript Roadmap
|
|-- Fundamentals
| |-- Basics of Programming
| | |-- Introduction to JavaScript
| | |-- Setting Up Development Environment (IDE: VSCode, Sublime Text, etc.)
| |
| |-- Syntax and Structure
| | |-- Basic Syntax
| | |-- Variables (var, let, const) and Data Types
| | |-- Operators and Expressions
|
|-- Control Structures
| |-- Conditional Statements
| | |-- If-Else Statements
| | |-- Switch Case
| |
| |-- Loops
| | |-- For Loop
| | |-- While Loop
| | |-- Do-While Loop
| | |-- For...in and For...of Loops
| |
| |-- Exception Handling
| | |-- Try-Catch Block
| | |-- Finally Block
| | |-- Throwing Errors
|
|-- Functions and Scope
| |-- Defining Functions
| | |-- Function Declarations
| | |-- Function Expressions
| | |-- Arrow Functions
| |
| |-- Parameters and Arguments
| | |-- Default Parameters
| | |-- Rest and Spread Operators
| |
| |-- Scope
| | |-- Global and Local Scope
| | |-- Hoisting
| | |-- Closures
|
|-- Object-Oriented Programming (OOP)
| |-- Basics of OOP
| | |-- Objects and Properties
| | |-- Methods
| |
| |-- Prototypes and Inheritance
| | |-- Prototype Chain
| | |-- Inheritance with Prototypes
| |
| |-- Classes
| | |-- Class Syntax
| | |-- Constructors
| | |-- Inheritance (extends and super)
| |
| |-- Encapsulation
| | |-- Private and Public Members (using # for private)
|
|-- Advanced JavaScript
| |-- Asynchronous JavaScript
| | |-- Callbacks
| | |-- Promises
| | |-- Async/Await
| |
| |-- Event Loop
| | |-- Understanding the Event Loop
| | |-- Microtasks and Macrotasks
|
|-- Data Structures
| |-- Arrays
| | |-- Array Methods (map, filter, reduce, etc.)
| | |-- Array Manipulation
| |
| |-- Objects
| | |-- Creating and Manipulating Objects
| | |-- Object Methods (keys, values, entries)
| |
| |-- Sets and Maps
| | |-- Working with Sets
| | |-- Working with Maps
|
|-- Browser APIs
| |-- Document Object Model (DOM)
| | |-- Selecting Elements
| | |-- Manipulating Elements
| | |-- Event Handling
| |
| |-- Fetch API
| | |-- Making HTTP Requests
| | |-- Handling Responses
| |
| |-- Web Storage
| | |-- LocalStorage and SessionStorage
|
|-- Libraries and Frameworks
| |-- jQuery
| | |-- Basics of jQuery
| | |-- DOM Manipulation with jQuery
| |
| |-- React
| | |-- Components and JSX
| | |-- State and Props
| | |-- Lifecycle Methods
| |
| |-- Angular
| | |-- Components and Templates
| | |-- Services and Dependency Injection
| | |-- Routing
| |
| |-- Vue
| | |-- Vue Instance
| | |-- Templates and Directives
| | |-- Vue Router
|
|-- Build Tools and Module Bundlers
| |-- NPM and Yarn
| | |-- Package Management
| | |-- Scripts and Dependencies
| |
| |-- Webpack
| | |-- Module Bundling
| | |-- Loaders and Plugins
| |
| |-- Babel
| | |-- Transpiling JavaScript
| | |-- Using Presets and Plugins
|
|-- Testing in JavaScript
| |-- Unit Testing
| | |-- Jest (Setup, Writing Tests, Mocking)
| | |-- Mocha and Chai
| |
| |-- End-to-End Testing
| | |-- Cypress
| | |-- Selenium WebDriver
|
|-- Deployment and DevOps
| |-- Continuous Integration/Continuous Deployment (CI/CD)
| | |-- GitHub Actions
| | |-- Travis CI
| |
| |-- Containers and Microservices
| | |-- Docker (Dockerfile, Image Creation, Container Management)
| | |-- Kubernetes (Pods, Services, Deployments, Managing JavaScript Applications on Kubernetes)

Free JavaScript Courses 👇👇

https://imp.i115008.net/mgGagX

https://bit.ly/3hMc4nb

https://bit.ly/3EuI8pv

https://bit.ly/39g7Z67

https://t.me/javascript_courses

Join @free4unow_backup for more free courses

ENJOY LEARNING 👍👍

Here is a great JavaScript interview question!

What the heck is a Promise doing under the hood?

In JavaScript, things usually happen one after the other. It's like a checklist each item gets done before moving to the next.

When a function returns a Promise, it's like making a promise to do something, like fetch data from the internet. But JavaScript doesn't wait around for the data to come back. Instead, it moves on to the next task.

Now, here's where things get interesting. While JavaScript is busy doing other stuff, like running more code, the Promise is off fetching data in the background.

Once the data is fetched, the Promise is fulfilled, and it has some information to share. But JavaScript needs to know when it's time to handle that information. That's where the onFulfilled part of the Promise comes in.

When the Promise is fulfilled, JavaScript takes the onFulfilled code and puts it in a special queue, ready to be run.

Now, async/await enters the scene. When we mark a function as async, we're telling JavaScript, "Hey, this function might take some time to finish, so don't wait up for it."

And when we use the await keyword inside an async function, it's like saying, "Hold on a sec, JavaScript. I need to wait for something important before moving on."

So, when JavaScript encounters an await keyword, it pauses and lets the async function do its thing. If that thing happens to be a Promise, JavaScript knows it can move on to other tasks while waiting for the Promise to resolve.

Once the Promise is resolved, JavaScript picks up where it left off and continues running the code.

Promises and async/await allow JavaScript to handle asynchronous tasks while keeping things organized and in order. Promises handle the background tasks, while async/await makes it easier to work with them in our code, ensuring everything happens in the right sequence.

Learn these concepts to master React JS ✅

𝟏. 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬
- Functional Components
- Class Components
- JSX (JavaScript XML) Syntax
𝟐. 𝐏𝐫𝐨𝐩𝐬 (𝐏𝐫𝐨𝐩𝐞𝐫𝐭𝐢𝐞𝐬)
- Passing Props
- Default Props
- Prop Types
𝟑. 𝐒𝐭𝐚𝐭𝐞
- useState Hook
- Class Component State
- Immutable State
𝟒. 𝐋𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 𝐌𝐞𝐭𝐡𝐨𝐝𝐬 (𝐂𝐥𝐚𝐬𝐬 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬)
- componentDidMount
- componentDidUpdate
- componentWillUnmount
𝟓. 𝐇𝐨𝐨𝐤𝐬 (𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬)
- useState
- useEffect
- useContext
- useReducer
- useCallback
- useMemo
- useRef
- useImperativeHandle
- useLayoutEffect
𝟔. 𝐄𝐯𝐞𝐧𝐭 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠
- Handling Events in Functional Components
- Handling Events in Class Components
𝟕. 𝐂𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧𝐚𝐥 𝐑𝐞𝐧𝐝𝐞𝐫𝐢𝐧𝐠
- if Statements
- Ternary Operators
- Logical && Operator
𝟖. 𝐋𝐢𝐬𝐭𝐬 𝐚𝐧𝐝 𝐊𝐞𝐲𝐬
- Rendering Lists
- Keys in React Lists
𝟗. 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭 𝐂𝐨𝐦𝐩𝐨𝐬𝐢𝐭𝐢𝐨𝐧
- Reusing Components
- Children Props
- Composition vs Inheritance
𝟏𝟎. 𝐇𝐢𝐠𝐡𝐞𝐫-𝐎𝐫𝐝𝐞𝐫 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬 (𝐇𝐎𝐂)
- Creating HOCs
- Using HOCs for Reusability
𝟏𝟏. 𝐑𝐞𝐧𝐝𝐞𝐫 𝐏𝐫𝐨𝐩𝐬
- Using Render Props Pattern
𝟏𝟐. 𝐑𝐞𝐚𝐜𝐭 𝐑𝐨𝐮𝐭𝐞𝐫
- <BrowserRouter>
- <Route>
- <Link>
- <Switch>
- Route Parameters
𝟏𝟑. 𝐍𝐚𝐯𝐢𝐠𝐚𝐭𝐢𝐨𝐧
- useHistory Hook
- useLocation Hook

𝐒𝐭𝐚𝐭𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭
𝟏𝟒. 𝐂𝐨𝐧𝐭𝐞𝐱𝐭 𝐀𝐏𝐈
- Creating Context
- useContext Hook
𝟏𝟓. 𝐑𝐞𝐝𝐮𝐱
- Actions
- Reducers
- Store
- connect Function (React-Redux)
𝟏𝟔. 𝐅𝐨𝐫𝐦𝐬
- Handling Form Data
- Controlled Components
- Uncontrolled Components
𝟏𝟕. 𝐒𝐢𝐝𝐞 𝐄𝐟𝐟𝐞𝐜𝐭𝐬
- useEffect for Data Fetching
- useEffect Cleanup
𝟏𝟖. 𝐀𝐉𝐀𝐗 𝐑𝐞𝐪𝐮𝐞𝐬𝐭𝐬
- Fetch API
- Axios Library

𝐄𝐫𝐫𝐨𝐫 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠
𝟏𝟗. 𝐄𝐫𝐫𝐨𝐫 𝐁𝐨𝐮𝐧𝐝𝐚𝐫𝐢𝐞𝐬
- componentDidCatch (Class Components)
- ErrorBoundary Component (Functional Components)
𝟐𝟎. 𝐓𝐞𝐬𝐭𝐢𝐧𝐠
- Jest Testing Framework
- React Testing Library
𝟐𝟏. 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧
- Memoization
- Profiling and Performance Monitoring
𝟐𝟐. 𝐁𝐮𝐢𝐥𝐝 𝐚𝐧𝐝 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭
- Create React App (CRA)
- Production Builds
- Deployment Strategies

𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 𝐚𝐧𝐝 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬
𝟐𝟑. 𝐒𝐭𝐲𝐥𝐢𝐧𝐠 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬
- Styled-components
- CSS Modules
𝟐𝟒. 𝐒𝐭𝐚𝐭𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬
- Redux
- MobX
𝟐𝟓. 𝐑𝐨𝐮𝐭𝐢𝐧𝐠 𝐋𝐢𝐛𝐫𝐚𝐫𝐢𝐞𝐬
- React Router
- Reach Router

Web Development Best Resources: https://topmate.io/coding/930165

ENJOY LEARNING 👍👍

Master Javascript :

The JavaScript Tree 👇
|
|── Variables
| ├── var
| ├── let
| └── const
|
|── Data Types
| ├── String
| ├── Number
| ├── Boolean
| ├── Object
| ├── Array
| ├── Null
| └── Undefined
|
|── Operators
| ├── Arithmetic
| ├── Assignment
| ├── Comparison
| ├── Logical
| ├── Unary
| └── Ternary (Conditional)
||── Control Flow
| ├── if statement
| ├── else statement
| ├── else if statement
| ├── switch statement
| ├── for loop
| ├── while loop
| └── do-while loop
|
|── Functions
| ├── Function declaration
| ├── Function expression
| ├── Arrow function
| └── IIFE (Immediately Invoked Function Expression)
|
|── Scope
| ├── Global scope
| ├── Local scope
| ├── Block scope
| └── Lexical scope
||── Arrays
| ├── Array methods
| | ├── push()
| | ├── pop()
| | ├── shift()
| | ├── unshift()
| | ├── splice()
| | ├── slice()
| | └── concat()
| └── Array iteration
| ├── forEach()
| ├── map()
| ├── filter()
| └── reduce()|
|── Objects
| ├── Object properties
| | ├── Dot notation
| | └── Bracket notation
| ├── Object methods
| | ├── Object.keys()
| | ├── Object.values()
| | └── Object.entries()
| └── Object destructuring
||── Promises
| ├── Promise states
| | ├── Pending
| | ├── Fulfilled
| | └── Rejected
| ├── Promise methods
| | ├── then()
| | ├── catch()
| | └── finally()
| └── Promise.all()
|
|── Asynchronous JavaScript
| ├── Callbacks
| ├── Promises
| └── Async/Await
|
|── Error Handling
| ├── try...catch statement
| └── throw statement
|
|── JSON (JavaScript Object Notation)
||── Modules
| ├── import
| └── export
|
|── DOM Manipulation
| ├── Selecting elements
| ├── Modifying elements
| └── Creating elements
|
|── Events
| ├── Event listeners
| ├── Event propagation
| └── Event delegation
|
|── AJAX (Asynchronous JavaScript and XML)
|
|── Fetch API
||── ES6+ Features
| ├── Template literals
| ├── Destructuring assignment
| ├── Spread/rest operator
| ├── Arrow functions
| ├── Classes
| ├── let and const
| ├── Default parameters
| ├── Modules
| └── Promises
|
|── Web APIs
| ├── Local Storage
| ├── Session Storage
| └── Web Storage API
|
|── Libraries and Frameworks
| ├── React
| ├── Angular
| └── Vue.js
||── Debugging
| ├── Console.log()
| ├── Breakpoints
| └── DevTools
|
|── Others
| ├── Closures
| ├── Callbacks
| ├── Prototypes
| ├── this keyword
| ├── Hoisting
| └── Strict mode
|
| END __

JavaScript Cheatsheet 📘


Do react,if you want more such notes 🚀

⌨️ JavaScript: Array Methods Visualized

Do react,if you want more such notes 🚀

✌️ 25 Javascript Path Files Used To Store Sensitive Information In Web Application:-

1️⃣ /js/config.js
2️⃣ /js/credentials.js
3️⃣ /js/secrets.js
4️⃣ /js/keys.js
5️⃣ /js/password.js
6️⃣ /js/api_keys.js
7️⃣/js/auth_tokens.js
8️⃣/js/access_tokens.js
9️⃣/js/sessions.js

♾

1️⃣ /js/authorization.js
2️⃣ /js/encryption.js
3️⃣ /js/certificates.js
4️⃣ /js/ssl_keys.js
5️⃣ /js/passphrases.js
6️⃣ /js/policies.js
7️⃣ /js/permissions.js
8️⃣ /js/privileges.js
9️⃣ /js/hashes.js

♾

1️⃣ /js/salts.js
2️⃣ /js/nonces.js
3️⃣ js/signatures.js
4️⃣ js/digests.js
5️⃣ js/tokens.js
6️⃣ js/cookies.js
7️⃣ /js/topsecr3tdonotlook.js

Javascript Web Projects 👇👇
https://t.me/webdevelopmentbook/120

Top 10 Web Development Technologies 🌐

1. 🟨 JavaScript — 98% usage

2. 🔵 TypeScript — 78% adoption

3. 🟢 Node.js — 75% backend choice

4. ⚛️ React — 70% frontend framework

5. 🅰️ Angular — 55% enterprise use

6. 💚 Vue.js — 49% growing popularity

7. 🐍 Python — 48% for full-stack

8. 💎 Ruby on Rails — 45% rapid development

9. 🐘 PHP — 43% widespread use

10. ☕ Java — 40% enterprise solutions

11. 🦀 Rust — 38% performance-critical apps

12. 🎯 Dart — 35% with Flutter for web

13. 🔷 GraphQL — 33% API queries

14. 🍃 MongoDB — 30% NoSQL database

15. 🐳 Docker — 28% containerization

16. ☁️ AWS — 25% cloud services

17. 🔶 Svelte — 22% compile-time framework

18. 🔷 Next.js — 20% React framework

19. 🟣 Blazor — 18% .NET web apps

20. 🟢 Deno — 15% secure runtime

⌨️ CSS shortcuts!!

Save time and make your code cleaner with these CSS shortcuts.

How does Docker Work?

CSS notes 📝