Back-end developer:

∟📂 Server-side coding (Python, Java, PHP, NodeJs, Go, .Net)
∟📂 Databases (SQL or NoSQL)
∟📂 APIs and web services
∟📂 Security and authentication
∟📂 Caching and performance tuning
∟📂 Scalability and load balancing
∟📂 Deployment and DevOps

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Front end development

Preparing for a ReactJS interview? Here are some frequently asked questions to help you ace it!

🔹 What is React? Explain its core concepts, including JSX, virtual DOM, and component-based architecture.

🔹 Difference between functional and class components? Dive into hooks vs lifecycle methods.

🔹 What are hooks? Discuss useState, useEffect, and custom hooks.

🔹 Props vs State? Understand the difference and when to use each.

🔹 What is Redux? Know how to manage global state using Redux.

🔹 What are Higher-Order Components (HOCs)? Explain their role in component reusability.

🔹 What is lazy loading? Discuss the benefits of code splitting.

💡 Tip: Always relate these concepts to real-world projects you’ve worked on!

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

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📂 Frontend Development
∟📂 Learn HTML
∟📂 Learn CSS
∟📂 Learn JavaScript
∟📂 Learn React
∟📂 Learn Redux
∟📂 Learn TypeScript

📂 Backend Development
∟📂 Learn Node.js
∟📂 Learn Express.js
∟📂 Learn MongoDB
∟📂 RESTful APIs
∟📂 Authentication (JWT, OAuth)
∟📂 GraphQL
∟📂 SQL (e.g., MySQL, PostgreSQL)
∟📂 Database Design

Web Development Best Resources
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If you are starting a new project, you must first choose a tech stack.

Project starter pack:

- Backend: .NET
- Mobile: .NET MAUI(or AvaloniaUI or Uno)
- Frontend: Blazor or Angular
- Database: SQL Server or PostgreSQL
- Testing: xUnit + NSubstitute

Depending on the project type, mix and match various technologies.

This list has evolved over time because the key is to have a tech stack that allows you to build a robust and maintainable product.

Not just to follow trends.

Web Development Best Resources
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🔹 Aspiring Android Developer?
Learn Kotlin or Java

🔹 Aspiring iOS Developer?
Learn Swift or Objective-C

🔹 Aspiring Cross-Platform Mobile Developer?
Learn React Native or Flutter

🔹 Aspiring Web Developer?
Learn JavaScript and React.js

🔹 Aspiring Full-Stack Developer?
Learn JavaScript, Node.js, and a frontend framework like React.js or Angular

🔹 Aspiring Data Scientist?
Learn Python and Data Analytics

🔹 Aspiring Cloud Engineer?
Learn AWS/Azure/GCP

🔹 Aspiring Backend Developer?
Learn Java or Node.js

🔹 Aspiring Systems Architect?
Learn System Design Principles

🔹 Aspiring Cybersecurity Specialist?
Learn Python and Networking

🔹 Aspiring DevOps Engineer?
Learn Docker, Kubernetes, and CI/CD tools

🔹 Aspiring Machine Learning Engineer?
Learn Python, TensorFlow, and PyTorch

🔹 Aspiring Game Developer?
Learn Unity or Unreal Engine and C#

🔹 Aspiring UI/UX Designer?
Learn Figma, Sketch, or Adobe XD

🔹 Aspiring Blockchain Developer?
Learn Solidity and Ethereum

🔹 Aspiring Data Engineer?
Learn SQL, Python, and ETL tools

🔹 Aspiring QA Engineer?
Learn Selenium, TestNG, and automation testing principles

🔹 Aspiring IoT Developer?
Learn Embedded Systems, MQTT, and IoT protocols

🔹 Aspiring Technical Writer?
Learn Markdown, technical documentation tools, and content management systems

Web Development Best Resources
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What skills are you learning these days?

Let me know in comments 👇👇

Here's a concise Git Cheatsheet to help you with essential Git commands:

### Basic Git Commands:

1. Configure User:
- git config --global user.name "Your Name"
- git config --global user.email "[email protected]"

2. Initialize a Repository:
- git init
Initializes a new Git repository.

3. Clone a Repository:
- git clone <repository-url>
Clones an existing repository from a URL.

4. Check Status:
- git status
Shows the working directory and staging area status.

5. Add Files:
- git add <file>
Adds a file to the staging area.
- git add .
Adds all files in the current directory to the staging area.

6. Commit Changes:
- git commit -m "Commit message"
Commits staged changes with a message.

7. Log History:
- git log
Shows the commit history.

---

### Branching and Merging:

1. Create a New Branch:
- git branch <branch-name>
Creates a new branch.

2. Switch to a Branch:
- git checkout <branch-name>
Switches to the specified branch.

3. Create and Switch to a New Branch:
- git checkout -b <branch-name>
Creates and switches to a new branch.

4. Merge Branch:
- git merge <branch-name>
Merges the specified branch into the current branch.

5. Delete a Branch:
- git branch -d <branch-name>
Deletes a branch after it's merged.

---

### Remote Repositories:

1. Check Remote Repos:
- git remote -v
Shows the remote repositories.

2. Add a Remote Repository:
- git remote add origin <remote-repo-url>
Adds a remote repository.

3. Fetch Updates from Remote:
- git fetch
Fetches changes from the remote but doesn't merge.

4. Pull Changes from Remote:
- git pull
Fetches and merges changes from the remote.

5. Push Changes to Remote:
- git push origin <branch-name>
Pushes local commits to the remote branch.

---

### Stashing Changes:

1. Stash Changes:
- git stash
Temporarily stores modified tracked files.

2. Apply Stash:
- git stash apply
Applies the most recent stashed changes.

3. List Stashes:
- git stash list
Shows the list of stashed changes.

---

### Undoing Changes:

1. Unstage a File:
- git reset <file>
Unstages a file.

2. Discard Local Changes:
- git checkout -- <file>
Reverts changes to a file.

3. Reset a Commit:
- git reset --soft <commit>
Resets to a previous commit (keeps changes in working directory).

4. Reset Hard:
- git reset --hard <commit>
Resets to a previous commit and discards all changes.

---

### Tagging:

1. Create a Tag:
- git tag <tag-name>
Creates a new tag.

2. List Tags:
- git tag
Lists all tags.

3. Push Tags to Remote:
- git push origin <tag-name>
Pushes a specific tag to the remote.

---

### Miscellaneous:

1. Check Differences:
- git diff
Shows differences between working directory and staged files.

2. Show Commit:
- git show <commit>
Shows details of a specific commit.

Web Development Best Resources
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Full Stack Developer Roadmap

Free Web Development Resources have been posted on our WhatsApp channel 👇👇
https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z

DOM Methods Cheat Sheet for Web Developers 🚀

Mastering DOM manipulation is key to dynamic, interactive websites. Here’s a quick cheatsheet to level up your skills! 💻

📌 getElementById() – Selects the element with the specified ID.

📌 getElementsByClassName() – Returns all elements with a given class name.

📌 querySelector() – Selects the first element that matches a CSS selector.

📌 querySelectorAll() – Selects all elements matching a CSS selector.

📌 createElement() – Creates a new HTML element.

📌 appendChild() – Adds a node as the last child of a parent element.

📌 removeChild() – Removes a child node from a parent.

📌 addEventListener() – Attaches an event handler to the element.

📌 classList.add() – Adds a class to an element.

📌 innerHTML – Sets or returns the HTML content of an element.

Web Development Best Resources
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Roadmap for becoming Back-End Developer

Learn the basics of Internet

1. How does the internet work?
2. What is HTTP & HTTPS?
3. What is Domain Name?
4. What is IP Address?
5. DNS and how it works?
6. What is hosting?
7. What is SMTP?

Basics of front-end languages

1. HTML
2. CSS
3. JavaScript

Learn a back-end language

1. PHP
2. NodeJS
3. Ruby On Rails
4. Python
5. Go
5. C#

Just learn anyone of the above language but make sure you have in-depth understanding of that language.

I will recommend NodeJs or PHP.

Learn Version Control System

1. Basic Git Commands
2. Repo hosting services
    I. GitHub
    II. Gitlab
    III. Bitbucket

Learn about Relational Databases

1. MySQL
2. PostgreSQL
3. MariaDB
4. MS SQL
5. Oracle

MySQL is the most popular one.

Learn about NoSQL databases

1. MongoDB
2. RethinkDB
3. CouchDB
4. DynamoDB

NoSQL are very popular databases. Many startups are opting for NoSQL databases instead of SQL databases.

Learn About APIs

1. REST
2. JSON APIs
3. HATOAS
4. Open API Spec and Swagger
5. Authentication
6. GraphQL

Learn about caching

1. CDN (Cloud Delivery Network)
2. Server-side caching
    I. Redis
    II. Memcached
3. Client-side caching

Web Servers

1. Nginx
2. Apache
3. Reverse Proxy

Understand web security

1. Hashing Algorithm
   I. MD5
   II. SHA Family
   III. Scrypt
   IV. Bcrypt
2. HTTPS
3. CORS
4. SSL/TLS

Learn testing

1. Integration Testing
2. Unit Testing
3. Functional Testing

Containerization / Virtualization

1. Docker
2. Kubernetes
3. rkt

Architectural Patterns

1. Monolithic
2. Microservices
3. Serverless
4. Scaling (Horizontal & Vertical)
5. Load Balancers

Free Backend Development Resources: https://t.iss.one/free4unow_backup/368

Learn App Development Easily 🚀

Here's all you need to get started 💥

1. Introduction to App Development
   - What is Mobile App Development?
   - Types of Mobile Apps (Native, Hybrid, Web)
   - Development Platforms (Android, iOS)

2. Setting up the Development Environment
   - Android Studio & Xcode
   - Installing SDKs
   - Emulator/Simulator Setup

3. App Architecture
   - Understanding MVC and MVVM Patterns
   - Components of a Mobile App
   - Managing State in Apps

4. UI/UX Design
   - Material Design Guidelines (Android)
   - Human Interface Guidelines (iOS)
   - Creating Responsive and Adaptive Layouts

5. Layouts and Views
   - Layout Types (Linear, Constraint, Frame, etc.)
   - Handling Views and View Groups
   - Custom Views

6. User Input
   - Handling Touch Events
   - Forms and Input Validation
   - Accessibility Considerations

7. Navigation
   - Navigation Patterns (Drawer, Tabs, Bottom Navigation)
   - Navigation Controllers (iOS)
   - Navigating Between Screens (Intents, Activities, Fragments)

8. Data Storage
   - Shared Preferences
   - SQLite Databases
   - Using Room Database (Android)
   - Core Data (iOS)

9. Networking
   - Making HTTP Requests (Retrofit, Alamofire)
   - Working with APIs (REST, GraphQL)
   - Parsing JSON Data

10. Authentication
    - Implementing User Authentication
    - OAuth & Firebase Authentication
    - Social Logins (Google, Facebook)

11. Permissions
    - Requesting User Permissions
    - Handling Permission Results
    - Best Practices for Permissions

12. Push Notifications
    - Setting up Push Notifications
    - Firebase Cloud Messaging (FCM)
    - APNs (Apple Push Notification Service)

13. Working with Media
    - Image & Video Capture
    - Media Playback
    - Integrating Camera and Gallery

14. Location Services
    - Fetching User Location
    - Using Google Maps & MapKit
    - Geofencing and Location-based Features

15. Animations and Transitions
    - Adding Animations to Views
    - Screen Transitions
    - Lottie Animations

16. Handling Background Tasks
    - Background Services & WorkManager (Android)
    - Background Fetch & Push Notifications (iOS)

17. App Security
    - Securing Sensitive Data
    - Handling User Sessions Securely
    - Protecting API Keys

18. Testing
    - Writing Unit Tests
    - Testing UI Components
    - Debugging and Profiling Tools

19. Monetization
    - In-App Purchases
    - Integrating Ads (AdMob, Facebook Audience Network)
    - Subscription Models

20. Deployment
    - Preparing App for Deployment
    - Publishing on Google Play & App Store
    - Handling App Updates and Maintenance

21. Optimization
    - Memory Management
    - Reducing App Size
    - Performance Profiling

22. Best Practices
    - Following Platform Guidelines
    - Keeping Code DRY and Modular
    - Continuous Integration/Deployment (CI/CD)

Android App Development Free Resources: https://t.iss.one/appsuser

ENJOY LEARNING 👍👍

HR: Ananya just quit.

CEO: What do you want me to do?

HR: Are we replacing her? That project management role is crucial.

CEO: We’re not hiring for now. Let’s delegate her tasks.

HR: Will there be promotions for those taking on extra work?

CEO: No.

----2 Weeks Later----

HR: The team members we assigned Ananya's tasks to have submitted their two-week notice.

CEO: They’re just not committed enough. Delegate to Tanya; she’s been here 8 years.

----4 Weeks Later----

HR: Everyone on the project management team has quit, including Tanya. We need to rebuild.

CEO: I can’t believe Tanya and Ananya both left after all this time. I thought this job meant something to them.

Lesson learned: If you can't afford to give a top-performing employee a deserving raise, you certainly can't afford to lose them. It's vital to invest in and retain your loyal stars.

What lesson do you take from this?

5 Steps to Learn Front-End Development🚀

Step 1: Basics
    — Internet
    — HTTP
    — Browser
    — Domain & Hosting

Step 2: HTML
    — Basic Tags
    — Semantic HTML
    — Forms & Table

Step 3: CSS
    — Basics
    — CSS Selectors
    — Creating Layouts
    — Flexbox
    — Grid
    — Position - Relative & Absolute
    — Box Model
    — Responsive Web Design
 
Step 3: JavaScript
    — Basics Syntax
    — Loops
    — Functions
    — Data Types & Object
    — DOM selectors
    — DOM Manipulation
    — JS Module - Export & Import
    — Spread & Rest Operator
    — Asynchronous JavaScript
    — Fetching API
    — Event Loop
    — Prototype
    — ES6 Features

Step 4: Git and GitHub
    — Basics
    — Fork
    — Repository
    — Pull Repo
    — Push Repo
    — Locally Work With Git

Step 5: React
    — Components & JSX
    — List & Keys
    — Props & State
    — Events
    — useState Hook
    — CSS Module
    — React Router
    — Tailwind CSS

Now apply for the job. All the best 🚀

To learn web design and development from basic to advanced levels, you can follow these steps:🤩🤩

⏩HTML and CSS:
Start with the basics of HTML (Hypertext Markup Language) and CSS (Cascading Style Sheets). HTML provides the structure and content of web pages, while CSS handles the visual presentation. Learn how to create web pages, format text, add images, and apply styles using HTML and CSS.

⏩JavaScript:
Expand your knowledge by learning JavaScript, a programming language for web development. JavaScript adds interactivity and dynamic features to websites. Study JavaScript concepts like variables, functions, loops, and conditional statements. Learn how to manipulate the Document Object Model (DOM) and create interactive elements.

⏩Responsive Web Design:
Understand the principles of responsive web design, which ensures websites adapt to different screen sizes and devices. Learn techniques such as media queries and flexible layouts to create responsive and mobile-friendly websites.

⏩Front-End Frameworks:
Explore popular front-end frameworks like Bootstrap or Foundation. These frameworks provide pre-built components and a responsive grid system, making it easier to design and develop modern, visually appealing websites.

⏩Back-End Development:
Dive into back-end development to create dynamic websites and handle server-side operations. Learn a back-end programming language such as Python, PHP, or Node.js. Understand concepts like server-side scripting, handling databases, and interacting with APIs.

⏩Database Management:
Gain knowledge of database management systems such as MySQL or PostgreSQL. Understand how to create, manage, and query databases, as well as the principles of database design and normalization.

⏩Content Management Systems (CMS):
Explore popular CMS platforms like WordPress, Joomla, or Drupal. Learn how to customize and develop themes, create plugins or modules, and manage website content using CMS tools.

⏩Version Control:
Familiarize yourself with version control systems like Git. Learn how to track changes, collaborate with others, and manage your codebase effectively using version control.

⏩Web Performance and Optimization:
Study techniques for optimizing website performance, such as optimizing images, minifying CSS and JavaScript files, and caching. Understand concepts like page speed, performance testing, and website optimization best practices.

⏩Continuous Learning and Industry Trends:
Stay updated with the latest web design and development trends, technologies, and tools. Follow blogs, forums, and online communities to learn from industry experts and explore new advancements.

➡️Build Projects and Practice:
Put your knowledge into practice by building projects and websites. Start with small projects and gradually work on more complex ones. Building real-world projects will help you gain practical experience and refine your skills.

We provide you best materials 🤩🤩

Remember, web design and development is a vast field, and continuous learning is key. Practice regularly, experiment with different techniques, and don't be afraid to take on challenges. Building a strong foundation and keeping up with industry trends will help you advance in web design and development.

Guys, if you’re diving into web development in 2024, JavaScript remains an absolute must.

Whether you’re a beginner or brushing up on your skills, here’s a roadmap to mastering this language in today’s tech landscape.

### 1. Start with the Fundamentals
Even in 2024, you can’t skip the basics. Ensure you have a strong foundation in:
- Variables and Data Types: Numbers, strings, booleans, arrays, and objects.
- Functions: Understanding function declarations, expressions, arrow functions, and callbacks.
- Control Structures: Loops, conditionals, and handling logic effectively.

Pro Tip: Use online sandboxes like CodePen or JSFiddle to practice your basic JavaScript in real-time.

### 2. Master DOM Manipulation
JavaScript’s strength lies in manipulating HTML and CSS. Once you understand the basics, get hands-on with the Document Object Model (DOM):
- Learn how to select elements using document.getElementById or querySelector.
- Modify elements dynamically with textContent, style, or even create elements with createElement().
- Handle user interactions with event listeners like addEventListener().

Tip: Play with mini-projects like a to-do list or a dynamic gallery to get comfortable with DOM manipulation.

### 3. Understand ES6+ Features
JavaScript has evolved, and you need to be fluent in modern JS to stay relevant:
- Arrow Functions for cleaner syntax.
- Template Literals for easier string manipulation.
- Destructuring to extract values from arrays and objects with less code.
- Promises & Async/Await for handling asynchronous code in a more readable way.

ES6+ is now industry-standard, and modern frameworks rely heavily on these features.

### 4. Asynchronous JavaScript
In today’s web development, handling async operations is essential. Start with understanding callbacks before moving on to:
- Promises: Understand .then() and .catch() syntax.
- Async/Await: Write asynchronous code that looks synchronous.
- Learn how to handle APIs with fetch() and manage real-world scenarios like error handling.

Challenge: Build a small weather app by fetching data from a public API using async/await!

### 5. Dive Into JavaScript Frameworks
Once you have a solid grasp of vanilla JavaScript, it’s time to explore frameworks. The two giants of 2024 are:
- React: For building dynamic user interfaces with components.
- Angular: If you prefer a more structured and opinionated approach.

Pro Tip: Pick one and stick with it for a while. React might be easier to get started with, but Angular gives you more power when building complex enterprise-level applications.

### 6. Test Your Code
Testing is an integral part of development in 2024. Get used to writing unit tests using:
- Jest (for React apps).
- Jasmine/Karma (for Angular apps).

Mastering testing frameworks early will not only make you a more reliable developer but will also help you debug faster.

### 7. Build Real-World Projects
The best way to learn JavaScript is by doing. Start by building small projects and gradually move on to more complex ones:
- A personal portfolio site with interactive elements.
- A task management app using local storage.
- A single-page application (SPA) with a JS framework.

Pro Tip: Contribute to open-source projects or collaborate with others to gain real-world experience.

### 8. Learn Version Control (Git)
In 2024, version control is non-negotiable. Use Git to track changes and manage your project versions. Familiarize yourself with:
- Basic Git commands like clone, commit, push, and pull.
- Platforms like GitHub for collaboration and portfolio hosting.

Start now, and by the end of the year, you'll be writing clean, efficient, and modern JavaScript like a pro!

Web Development Best Resources
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Here are the 50 JavaScript interview questions for 2024

1. What is JavaScript?
2. What are the data types in JavaScript?
3. What is the difference between null and undefined?
4. Explain the concept of hoisting in JavaScript.
5. What is a closure in JavaScript?
6. What is the difference between “==” and “===” operators in JavaScript?
7. Explain the concept of prototypal inheritance in JavaScript.
8. What are the different ways to define a function in JavaScript?
9. How does event delegation work in JavaScript?
10. What is the purpose of the “this” keyword in JavaScript?
11. What are the different ways to create objects in JavaScript?
12. Explain the concept of callback functions in JavaScript.
13. What is event bubbling and event capturing in JavaScript?
14. What is the purpose of the “bind” method in JavaScript?
15. Explain the concept of AJAX in JavaScript.
16. What is the “typeof” operator used for?
17. How does JavaScript handle errors and exceptions?
18. Explain the concept of event-driven programming in JavaScript.
19. What is the purpose of the “async” and “await” keywords in JavaScript?
20. What is the difference between a deep copy and a shallow copy in JavaScript?
21. *PH4N745M*
21. How does JavaScript handle memory management?
22. Explain the concept of event loop in JavaScript.
23. What is the purpose of the “map” method in JavaScript?
24. What is a promise in JavaScript?
25. How do you handle errors in promises?
26. Explain the concept of currying in JavaScript.
27. What is the purpose of the “reduce” method in JavaScript?
28. What is the difference between “null” and “undefined” in JavaScript?
29. What are the different types of loops in JavaScript?
30. What is the difference between “let,” “const,” and “var” in JavaScript?
31. Explain the concept of event propagation in JavaScript.
32. What are the different ways to manipulate the DOM in JavaScript?
33. What is the purpose of the “localStorage” and “sessionStorage” objects?
34. How do you handle asynchronous operations in JavaScript?
35. What is the purpose of the “forEach” method in JavaScript?
36. What are the differences between “let” and “var” in JavaScript?
37. Explain the concept of memoization in JavaScript.
38. What is the purpose of the “splice” method in JavaScript arrays?
39. What is a generator function in JavaScript?
40. How does JavaScript handle variable scoping?
41. What is the purpose of the “split” method in JavaScript?
42. What is the difference between a deep clone and a shallow clone of an object?
43. Explain the concept of the event delegation pattern.
44. What are the differences between JavaScript’s “null” and “undefined”?
45. What is the purpose of the “arguments” object in JavaScript?
46. What are the different ways to define methods in JavaScript objects?
47. Explain the concept of memoization and its benefits.
48. What is the difference between “slice” and “splice” in JavaScript arrays?
49. What is the purpose of the “apply” and “call” methods in JavaScript?
50. Explain the concept of the event loop in JavaScript and how it handles asynchronous operations.

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

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