JavaScript Tip💡

Remove duplicate elements from an array👇

Check out these 15 fascinating Free (public) APIs:

👩 Genderize .io
🔍 IMDb API
📦 Dropbox API
🚀 NASA API
📱 Twilio API
🌤️ OpenWeatherMap API
🍔 Open food facts
💬 Slack API
🐙 GitHub API
👕 Shopify API
💰 PayPal API
💳 Stripe API
🤖 Reddit API
📂 OneDrive API
🦠 VirusTotal API

@javascript_resources
@python_assets

A-Z Git in 2 minutes 🔥

here we go👇

1. Core:
• git init
• git clone
• git add
• git commit
• git status
• git diff
• git checkout
• git reset
• git log
• git show
• git tag
• git push
• git pull

2.Branching:
• git branch
• git checkout -b
• git merge
• git rebase
• git branch --set-upstream-to
• git branch --unset-upstream
• git cherry-pick

3.Merging:
• git merge
• git rebase

4.Stashing:
• git stash
• git stash pop
• git stash list
• git stash apply
• git stash drop

5.Remotes:
• git remote
• git remote add
• git remote remove
• git fetch
• git pull
• git push
• git clone --mirror

6.Configuration:
• git config
• git global config
• git reset config

7. Plumbing:
• git cat-file
• git checkout-index
• git commit-tree
• git diff-tree
• git for-each-ref
• git hash-object
• git ls-files
• git ls-remote
• git merge-tree
• git read-tree
• git rev-parse
• git show-branch
• git show-ref
• git symbolic-ref
• git tag --list
• git update-ref

8.Porcelain:
• git blame
• git bisect
• git checkout
• git commit
• git diff
• git fetch
• git grep
• git log
• git merge
• git push
• git rebase
• git reset
• git show
• git tag

9.Alias:
• git config --global alias.<alias> <command>

10.Hook:
• git config --local core.hooksPath <path>

11.Experimental: (May not be fully Supported)
• git annex
• git am
• git cherry-pick --upstream
• git describe
• git format-patch
• git fsck
• git gc
• git help
• git log --merges
• git log --oneline
• git log --pretty=
• git log --short-commit
• git log --stat
• git log --topo-order
• git merge-ours
• git merge-recursive
• git merge-subtree
• git mergetool
• git mktag
• git mv
• git patch-id
• git p4
• git prune
• git pull --rebase
• git push --mirror
• git push --tags
• git reflog
• git replace
• git reset --hard
• git reset --mixed
• git revert
• git rm
• git show-branch
• git show-ref
• git show-ref --heads
• git show-ref --tags
• git stash save
• git subtree
• git tag --delete
• git tag --force
• git tag --sign
• git tag -f
• git tag -l
• git tag --verify
• git unpack-file
• git update-index
• git verify-pack
• git worktree

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

HTML Pro Tip:

Elevate your code's power with semantic tags

🔅 Overscroll Behaviour in CSS

HTML Tip💡
@javascript_resources
@python_assets

You can use the "loading" attribute with the <img> element to control how the browser loads the image.

It has three values: "eager", "lazy", and "auto".

Reactjs & Nodejs in 2 minutes🔥

Here we go👇

-: 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. Best Practices
• Code Splitting
• PureComponent and React.memo
• Avoiding Reconciliation
• Keys for Dynamic Lists

22.Optimization
• Memoization
• Profiling and Performance Monitoring

23. Build and Deployment
• Create React App (CRA)
• Production Builds
• Deployment Strategies

Frameworks and Libraries
24.Styling Libraries
• Styled-components
• CSS Modules

25.State Management Libraries
• Redux
• MobX

26.Routing Libraries
• React Router
• Reach Router

-: Node.js :-

1.Introduction to Node.js
• JavaScript Runtime for
Server-Side Development
• Non-Blocking I/O

@javascript_resources

2.Setting Up Node.js
• Installing Node.js and NPM
• Package.json Configuration
• Node Version Manager (NVM)

3.Node.js Modules
• CommonJS Modules (require, module.exports)
• ES6 Modules (import, export)
• Built-in Modules (e.g., fs, http, events)

4.Core Concepts
• Event Loop
• Callbacks and Asynchronous Programming
• Streams and Buffers

5.Core Modules
• fs (File System)
• http and https (HTTP Modules)
• events (Event Emitter)
• util (Utilities)
• os (Operating System)
• path (Path Module)

6.NPM (Node Package Manager)
• Installing Packages
• Creating and Managing package.json
• Semantic Versioning
• NPM Scripts

7.Asynchronous Programming in Node.js
• Callbacks
• Promises
• Async/Await
• Error-First Callbacks

8. Express.js Framework
• Routing
• Middleware
• Templating Engines (Pug, EJS)
• RESTful APIs
• Error Handling Middleware

9.Working with Databases
• Connecting to Databases (MongoDB, MySQL)
• Mongoose (for MongoDB)
• Sequelize (for MySQL)
• Database Migrations and Seeders

10.Authentication and Authorization
• JSON Web Tokens (JWT)
• Passport.js Middleware
• OAuth and OAuth2

11. Security
• Helmet.js (Security Middleware)
• Input Validation and Sanitization
• Secure Headers
• Cross-Origin Resource Sharing (CORS)

12.Testing and Debugging
• Unit Testing (Mocha, Chai)
• Debugging Tools (Node Inspector)
• Load Testing (Artillery, Apache Bench)

13.API Documentation
• Swagger
• API Blueprint
• Postman Documentation

14.Real-Time Applications
• WebSockets (Socket.io)
• Server-Sent Events (SSE)
• WebRTC for Video Calls

15.Performance Optimization
• Caching Strategies (in-memory, Redis)
• Load Balancing (Nginx, HAProxy)
• Profiling and Optimization Tools (Node Clinic,
New Relic)

16.Deployment and Hosting
• Deploying Node.js Apps (PM2, Forever)
• Hosting Platforms (AWS, Heroku, DigitalOcean)
• Continuous Integration and Deployment-
(Jenkins, Travis CI)

17.RESTful API Design
• Best Practices
• API Versioning
• HATEOAS (Hypermedia as the Engine-
of Application State)

18.Middleware and Custom Modules
• Creating Custom Middleware
• Organizing Code into Modules
• Publish and Use Private NPM Packages

19.Logging
• Winston Logger
• Morgan Middleware
• Log Rotation Strategies

20.Streaming and Buffers
• Readable and Writable Streams
• Buffers
• Transform Streams

21.Error Handling and Monitoring
• Sentry and Error Tracking
• Health Checks and Monitoring Endpoints

22.Microservices Architecture
• Principles of Microservices
• Communication Patterns (REST, gRPC)
• Service Discovery and Load Balancing
in Microservices

What will be the output of the following JavaScript code

The output will be undefined.

In the obj, "this" keyword refers to the window object because getValue is an arrow function and it tries to find "value" property on this object and since it is undefined, it returns "undefined" as the final result.

Complete Full-Stack Roadmap🔥

In 2 minutes👇

1.Web Fundamentals:
• HTML
• CSS
• JavaScript Basics

2. Front-End Development:
• Advanced HTML
• Advanced CSS
• Responsive Design
• CSS Grid
• Flexbox

- JavaScript Frameworks:
• React.js
• Angular
• Vue.js

- State Management:
• Redux,
• Context API (React),
• Vuex (Vue)

- Styling Libraries:
• Bootstrap
• Material-UI
• Tailwind CSS

- Build Tools:
• Webpack
• Parcel

- Version Control:
• Git
• GitHub
• GitLab

3. Back-End Development:
- Server-Side Languages:
• Node.js (JavaScript)
• Python
• Ruby
• Java
• C#

- Web Frameworks:
• Express.js (Node.js)
• Django (Python)
• Ruby on Rails (Ruby)

- Databases:
• SQL
• NoSQL

- API Development:
• RESTful APIs
• GraphQL

- Authentication & Authorization:
• JWT
• OAuth

- ORM/ODM:
• Sequelize (Node.js)
• SQLAlchemy (Python)
• ActiveRecord (Ruby)

- Web Security:
• OWASP Top Ten
• HTTPS
• CORS

4. Database Management:
- Database Modeling:
• ER Diagrams
• Database Normalization

- Advanced Queries:
• Joins
• Subqueries
• Indexing

- Transactions and Concurrency:
• ACID Properties
• Locking Mechanisms

5. API & Microservices:
- RESTful API Design:
• API Endpoints
• HTTP Methods

- Microservices Architecture:
• Docker
• Kubernetes

- Message Brokers:
• RabbitMQ
• Apache Kafka

6. Testing:

- Unit Testing:
• Jest (JavaScript)
• pytest (Python)
• RSpec (Ruby)

- Integration Testing:
• SuperTest (Node.js)
• Requests (Python)

- CI/CD:
• Jenkins
• GitLab CI
• Travis CI

7. Front-End Advanced:
- Front-End Frameworks:
• Next.js (React)
• Nuxt.js (Vue.js)

- State Management:
• MobX (React)
• Vuex (Vue.js)
• Server-Side Rendering (SSR)
• Static Site Generation (SSG)

8. Back-End Advanced:
- Serverless Architecture:
• AWS Lambda
• Azure Functions

- GraphQL:
• Apollo Server
• Express-GraphQL

- WebSockets:
• Socket.io (Node.js)
• Action Cable (Ruby on Rails)

9. DevOps and Deployment:
- Cloud Platforms:
• AWS
• Azure
• Google Cloud Platform

- Server Configuration:
• Nginx
• Apache

- Load Balancing and Scaling:
• HAProxy
• NGINX Load Balancer

- Monitoring and Logging:
• Prometheus,
• ELK Stack (Elasticsearch, Logstash, Kibana)

@javascript_resources

10. Mobile Development (Optional):
• React Native (React)
• Flutter (Dart)

11.Version Control:
• Git
• GitHub Actions
• GitLab CI/CD

12.Other Skills:
- Agile Methodologies:
• Scrum
• Kanban

- Soft Skills:
• Communication
• Problem-Solving
• Time Management

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