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Web Development

Tune in to the 10th AI Journey 2025 international conference: scientists, visionaries, and global AI practitioners will come together on one stage. Here, you will hear the voices of those who don't just believe in the future—they are creating it!

Speakers include visionaries Kai-Fu Lee and Chen Qufan, as well as dozens of global AI gurus! Do you agree with their predictions about AI?

On November 20, we will focus on the role of AI in business and economic development and present technologies that will help businesses and developers be more effective by unlocking human potential.

On November 21, we will talk about how engineers and scientists are making scientific and technological breakthroughs and creating the future today! The day's program includes presentations by scientists from around the world:
- Ajit Abraham (Sai University, India) will present on “Generative AI in Healthcare”
- Nebojša Bačanin Džakula (Singidunum University, Serbia) will talk about the latest advances in bio-inspired metaheuristics
- AIexandre Ferreira Ramos (University of São Paulo, Brazil) will present his work on using thermodynamic models to study the regulatory logic of trannoscriptional control at the DNA level
- Anderson Rocha (University of Campinas, Brazil) will give a presentation ennoscriptd “AI in the New Era: From Basics to Trends, Opportunities, and Global Cooperation”.

And in the special AIJ Junior track, we will talk about how AI helps us learn, create and ride the wave with AI.

The day will conclude with an award ceremony for the winners of the AI Challenge for aspiring data scientists and the AIJ Contest for experienced AI specialists. The results of an open selection of AIJ Science research papers will be announced.

Ride the wave with AI into the future!

Tune in to the AI Journey webcast on November 19-21.

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3.72K views10:58

Web Development

✅ Frontend Development Skills (HTML, CSS, JavaScript) 🌐💻

1️⃣ HTML (HyperText Markup Language)
Purpose: It gives structure to a webpage.
Think of it like the skeleton of your site.

Example:

<!DOCTYPE html>
<html>
  <head>
    <noscript>My First Page</noscript>
  </head>
  <body>
    <h1>Hello, World!</h1>
    <p>This is my first webpage.</p>
  </body>
</html>

💡 Tags like <h1> are for headings, <p> for paragraphs. Pro tip: Use semantic tags like <article> for better SEO and screen readers.

2️⃣ CSS (Cascading Style Sheets)
Purpose: Adds style to your HTML – colors, fonts, layout.
Think of it like makeup or clothes for your HTML skeleton.

Example:

<style>
  h1 {
    color: blue;
    text-align: center;
  }
  p {
    font-size: 18px;
    color: gray;
  }
</style>

💡 You can add CSS inside <style> tags, or link an external CSS file. In 2025, master Flexbox for layouts: display: flex; aligns items like magic!

3️⃣ JavaScript
Purpose: Makes your site interactive – clicks, animations, data changes.
Think of it like the brain of the site.

Example:

<noscript>
  function greet() {
    alert("Welcome to my site!");
  }
</noscript>

<button onclick="greet()">Click Me</button>

💡 When you click the button, it shows a popup. Level up with event listeners: button.addEventListener('click', greet); for cleaner code.

👶 Mini Project Example

<!DOCTYPE html>
<html>
  <head>
    <noscript>Simple Site</noscript>
    <style>
      body { font-family: Arial; text-align: center; }
      h1 { color: green; }
      button { padding: 10px 20px; }
    </style>
  </head>
  <body>
    <h1>My Simple Webpage</h1>
    <p>Click the button below:</p>
    <button onclick="alert('Hello Developer!')">Say Hi</button>
  </body>
</html>

✅ Summary:
⦁ HTML = structure
⦁ CSS = style
⦁ JavaScript = interactivity

Mastering these 3 is your first step to becoming a web developer!

💬 Tap ❤️ for more!

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3.5K viewsedited 18:00

Web Development

✅ Advanced Front-End Development Skills 🌐✨

🔹 1. Responsive Design
Why: Your website should look great on mobile, tablet, and desktop.
Learn:
⦁ Media Queries
⦁ Flexbox
⦁ CSS Grid

Example (Flexbox Layout):

 {
  display: flex;
  justify-content: space-between;
}

Example (Media Query):

@media (max-width: 600px) {.container {
    flex-direction: column;
  }
}

🔹 2. CSS Frameworks
Why: Pre-built styles save time and help maintain consistency.

Bootstrap Example:

<button class="btn btn-success">Subscribe</button>

Tailwind CSS Example:

<button class="bg-green-500 text-white px-4 py-2 rounded">Subscribe</button>

🔹 3. JavaScript Libraries (jQuery Basics)
Why: Simplifies DOM manipulation and AJAX requests (still useful in legacy projects).

Example (Hide Element):

<button id="btn">Hide</button>
<p id="text">Hello World</p>

<noscript src="https://code.jquery.com/jquery-3.6.0.min.js"></noscript>
<noscript>
  $("#btn").click(function() {
    $("#text").hide();
  });
</noscript>

🔹 4. Form Validation with JavaScript
Why: Ensure users enter correct data before submission.

Example:

<form onsubmit="return validateForm()">
  <input type="email" id="email" placeholder="Email">
  <button type="submit">Submit</button>
</form>

<noscript>
function validateForm() {
  const email = document.getElementById("email").value;
  if (email === "") {
    alert("Email is required");
    return false;
  }
}
</noscript>

🔹 5. Dynamic DOM Manipulation
Why: Add interactivity (like toggling dark mode, modals, menus).

Dark Mode Example:

<button onclick="toggleTheme()">Toggle Dark Mode</button>

<noscript>
function toggleTheme() {
  document.body.classList.toggle("dark-mode");
}
</noscript>
<style>.dark-mode {
  background-color: #111;
  color: #fff;
}
</style>

🔹 6. Performance Optimization Tips
⦁ Compress images (use WebP)
⦁ Minify CSS/JS
⦁ Lazy load images
⦁ Use fewer fonts
⦁ Avoid blocking noscripts in <head>

📌 Mini Project Ideas to Practice:
⦁ Responsive landing page (Bootstrap/Tailwind)
⦁ Toggle dark/light theme
⦁ Newsletter signup form with validation
⦁ Mobile menu toggle with JavaScript

💬 React ❤️ for more!

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3.02K viewsedited 15:10

Web Development

✅ Version Control with Git & GitHub 🗂️

Version control is a must-have skill in web development! It lets you track changes in your code, collaborate with others, and avoid "it worked on my machine" problems 😅

📌 What is Git?
Git is a distributed version control system that lets you save snapshots of your code.

📌 What is GitHub?
GitHub is a cloud-based platform to store Git repositories and collaborate with developers.

🛠️ Basic Git Commands (with Examples)

1️⃣ git init
Initialize a Git repo in your project folder.

git init

2️⃣ git status
Check what changes are untracked or modified.

git status

3️⃣ git add
Add files to staging area (preparing them for commit).

git add index.html
git add.     # Adds all files

4️⃣ git commit
Save the snapshot with a message.

git commit -m "Added homepage structure"

5️⃣ git log
See the history of commits.

git log

🌐 Using GitHub

6️⃣ git remote add origin
Connect your local repo to GitHub.

git remote add origin https://github.com/yourusername/repo.git

7️⃣ git push
Push your local commits to GitHub.

git push -u origin main

8️⃣ git pull
Pull latest changes from GitHub.

git pull origin main

👥 Collaboration Basics

🔀 Branching & Merging

git branch feature-navbar
git checkout feature-navbar
# Make changes, then:
git add.
git commit -m "Added navbar"
git checkout main
git merge feature-navbar

🔁 Pull Requests
Used on GitHub to review & merge code between branches.

🎯 Project Tip:
Use Git from day 1—even solo projects! It builds habits and prevents code loss.

💬 React ❤️ for more!

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3.27K views18:12

Web Development

💻 Back-End Development Basics ⚙️

Back-end development is the part of web development that works behind the scenes. It handles data, business logic, and communication between the front-end (what users see) and the database.

What is Back-End Development?

- It powers websites and apps by processing user requests, storing and retrieving data, and performing operations on the server.
- Unlike front-end (design & interactivity), back-end focuses on the logic, database, and servers.

Core Components of Back-End

1. Server
A server is a computer that listens to requests (like loading a page or submitting a form) and sends back responses.

2. Database
Stores all the data your app needs — user info, posts, products, etc.
Types of databases:
- _SQL (Relational):_ MySQL, PostgreSQL
- _NoSQL (Non-relational):_ MongoDB, Firebase

3. APIs (Application Programming Interfaces)
Endpoints that let the front-end and back-end communicate. For example, getting a list of users or saving a new post.

4. Back-End Language & Framework
Common languages: JavaScript (Node.js), Python, PHP, Ruby, Java

Frameworks make coding easier: Express (Node.js), Django (Python), Laravel (PHP), Rails (Ruby)

How Does Back-End Work?

User → Front-End → Sends Request → Server (Back-End) → Processes Request → Queries Database → Sends Data Back → Front-End → User

Simple Example: Create a Back-End Server Using Node.js & Express

Let’s build a tiny app that sends a list of users when you visit a specific URL.

Step 1: Setup your environment

- Install Node.js from nodejs.org
- Create a project folder and open terminal there
- Initialize project & install Express framework:

npm init -y
npm install express

Step 2: Create a file server.js

const express = require('express');
const app = express();
const port = 3000;

// Sample data - list of users
const users = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' }
];

// Create a route to handle GET requests at /users
app.get('/users', (req, res) => {
  res.json(users);  // Send users data as JSON response
});

// Start the server
app.listen(port, () => {
  console.log(Server running on http://localhost:${port});
});

Step 3: Run the server

In terminal, run:

node server.js

Step 4: Test the server

Open your browser and go to:
http://localhost:3000/users

You should see:

[
  { "id": 1, "name": "Alice" },
  { "id": 2, "name": "Bob" }
]

What Did You Build?

- A simple server that _listens_ on port 3000
- An _API endpoint_ /users that returns a list of users in JSON format
- A basic back-end application that can be connected to a front-end

Why Is This Important?

- This is the foundation for building web apps that require user data, logins, content management, and more.
- Understanding servers, APIs, and databases helps you build full-stack applications.

What’s Next?

- Add routes for other operations like adding (POST), updating (PUT), and deleting (DELETE) data.
- Connect your server to a real database like MongoDB or MySQL.
- Handle errors, validations, and security (authentication, authorization).
- Learn to deploy your back-end app to the cloud (Heroku, AWS).

🎯 Pro Tip: Start simple and gradually add features. Try building a small app like a To-Do list with a back-end database.

💬 Tap ❤️ for more!

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3.17K views05:40

Web Development

✅ CRUD Operations in Back-End Development 🛠️📦

Now that you’ve built a basic server, let’s take it a step further by adding full CRUD functionality — the foundation of most web apps.

🔁 What is CRUD?

CRUD stands for:

⦁ C reate → Add new data (e.g., new user)
⦁ R ead → Get existing data (e.g., list users)
⦁ U pdate → Modify existing data (e.g., change user name)
⦁ D elete → Remove data (e.g., delete user)

These are the 4 basic operations every back-end should support.

🧪 Let’s Build a CRUD API

We’ll use the same setup as before (Node.js + Express) and simulate a database with an in-memory array.

Step 1: Setup Project (if not already)

npm init -y
npm install express

Step 2: Create server.js

const express = require('express');
const app = express();
const port = 3000;

app.use(express.json()); // Middleware to parse JSON

let users = [
  { id: 1, name: 'Alice'},
  { id: 2, name: 'Bob'}
];

// READ - Get all users
app.get('/users', (req, res) => {
  res.json(users);
});

// CREATE - Add a new user
app.post('/users', (req, res) => {
  const newUser = {
    id: users.length + 1,
    name: req.body.name
  };
  users.push(newUser);
  res.status(201).json(newUser);
});

// UPDATE - Modify a user
app.put('/users/:id', (req, res) => {
  const userId = parseInt(req.params.id);
  const user = users.find(u => u.id === userId);
  if (!user) return res.status(404).send('User not found');
  user.name = req.body.name;
  res.json(user);
});

// DELETE - Remove a user
app.delete('/users/:id', (req, res) => {
  const userId = parseInt(req.params.id);
  users = users.filter(u => u.id!== userId);
  res.sendStatus(204);
});

app.listen(port, () => {
  console.log(`CRUD API running at http://localhost:${port}`);
});

Step 3: Test Your API

Use tools like Postman or cURL to test:

⦁ GET /users → List users
⦁ POST /users → Add user { "name": "Charlie"}
⦁ PUT /users/1 → Update user 1’s name
⦁ DELETE /users/2 → Delete user 2

🎯 Why This Matters

⦁ CRUD is the backbone of dynamic apps like blogs, e-commerce, social media, and more
⦁ Once you master CRUD, you can connect your app to a real database and build full-stack apps

Next Steps

⦁ Add validation (e.g., check if name is empty)
⦁ Connect to MongoDB or PostgreSQL
⦁ Add authentication (JWT, sessions)
⦁ Deploy your app to the cloud

💡 Pro Tip: Try building a Notes app or a Product Inventory system using CRUD!

💬 Double Tap ❤️ for more!

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3.4K viewsedited 15:11

Web Development

✅ 🔤 A–Z of Web Development

A – API (Application Programming Interface)
Allows communication between different software systems.

B – Backend
The server-side logic and database operations of a web app.

C – CSS (Cascading Style Sheets)
Used to style and layout HTML elements.

D – DOM (Document Object Model)
Tree structure representation of web pages used by JavaScript.

E – Express.js
Minimal Node.js framework for building backend applications.

F – Frontend
Client-side part users interact with (HTML, CSS, JS).

G – Git
Version control system to track changes in code.

H – Hosting
Making your website or app available online.

I – IDE (Integrated Development Environment)
Software used to write and manage code (e.g., VS Code).

J – JavaScript
Scripting language that adds interactivity to websites.

K – Keywords
Important for SEO and also used in programming languages.

L – Lighthouse
Tool for testing website performance and accessibility.

M – MongoDB
NoSQL database often used in full-stack apps.

N – Node.js
JavaScript runtime for server-side development.

O – OAuth
Protocol for secure authorization and login.

P – PHP
Server-side language used in platforms like WordPress.

Q – Query Parameters
Used in URLs to send data to the server.

R – React
JavaScript library for building user interfaces.

S – SEO (Search Engine Optimization)
Improving site visibility on search engines.

T – TypeScript
A superset of JavaScript with static typing.

U – UI (User Interface)
Visual part of an app that users interact with.

V – Vue.js
Progressive JavaScript framework for building UIs.

W – Webpack
Module bundler for optimizing web assets.

X – XML
Markup language used for data sharing and transport.

Y – Yarn
JavaScript package manager alternative to npm.

Z – Z-index
CSS property to control element stacking on the page.

💬 Tap ❤️ for more!

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3.8K views17:27

Web Development

A brief introduction to object oriented programming OOP in Javanoscript programming language in a practical way with simple examples

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4.37K views15:56

Web Development

✅ How to Build Your First Web Development Project 💻🌐

1️⃣ Choose Your Project Idea
Pick a simple, useful project:
- Personal Portfolio Website
- To-Do List App
- Blog Platform
- Weather App

2️⃣ Learn Basic Technologies
- HTML for structure
- CSS for styling
- JavaScript for interactivity

3️⃣ Set Up Your Development Environment
- Use code editors like VS Code
- Install browser developer tools

4️⃣ Build the Frontend
- Create pages with HTML
- Style with CSS (Flexbox, Grid)
- Add dynamic features using JavaScript (event listeners, DOM manipulation)

5️⃣ Add Functionality
- Use JavaScript for form validation, API calls
- Fetch data from public APIs (weather, news) to display dynamic content

6️⃣ Learn Version Control
- Use Git to track your code changes
- Push projects to GitHub to showcase your work

7️⃣ Explore Backend Basics (optional for beginners)
- Learn Node.js + Express to build simple servers
- Connect with databases like MongoDB or SQLite

8️⃣ Deploy Your Project
- Use free hosting platforms like GitHub Pages, Netlify, or Vercel
- Share your live project link with others

9️⃣ Document Your Work
- Write README files explaining your project
- Include instructions to run or test it

Example Project: To-Do List App
- Build HTML form to add tasks
- Use JavaScript to display, edit, and delete tasks
- Store tasks in browser localStorage

🎯 Pro Tip: Focus on small projects. Build consistently and learn by doing.

Web Development Projects: https://whatsapp.com/channel/0029Vax4TBY9Bb62pAS3mX32

💬 Tap ❤️ for more!

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3.2K views19:17

Web Development

✅ How to Build a Personal Portfolio Website 🌐💼

This project shows your skills, boosts your resume, and helps you stand out. Follow these steps:

1️⃣ Setup Your Environment
• Install VS Code
• Create a folder named portfolio
• Add index.html, style.css, and noscript.js

2️⃣ Create the HTML Structure (index.html)

html
<!DOCTYPE html>
<html>
<head>
  <noscript>Your Name</noscript>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <header>
    <h1>Your Name</h1>
    <nav>
      <a href="#about">About</a>
      <a href="#projects">Projects</a>
      <a href="#contact">Contact</a>
    </nav>
  </header>

  <section id="about">
    <h2>About Me</h2>
    <p>Short intro, skills, and goals</p>
  </section>

  <section id="projects">
    <h2>Projects</h2>
    <div class="project">Project 1</div>
    <div class="project">Project 2</div>
  </section>

  <section id="contact">
    <h2>Contact</h2>
    <p>Email: your@email.com</p>
  </section>

  <footer>© 2025 Your Name</footer>
</body>
</html>

3️⃣ Add CSS Styling (style.css)

css
body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  color: #333;
}

header {
  background: #222;
  color: white;
  padding: 1rem;
  text-align: center;
}

nav a {
  margin: 0 1rem;
  color: white;
  text-decoration: none;
}

section {
  padding: 2rem;
}

.project {
  background: white;
  padding: 1rem;
  margin: 1rem 0;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 1rem;
  background: #eee;
}

4️⃣ Add Interactivity (Optional - noscript.js)
• Add smooth scroll, dark mode toggle, or animations if needed

5️⃣ Host Your Site
• Push code to GitHub
• Deploy with Netlify or Vercel (connect repo, click deploy)

6️⃣ Bonus Improvements
• Make it mobile responsive (media queries)
• Add a profile photo and social links
• Use icons (Font Awesome)

💡 Keep updating it as you learn new things!

Web Development Roadmap: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/1287

💬 Tap ❤️ for more!

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3.04K views07:18

Web Development

🌐 Web Development Tools & Their Use Cases 💻✨

🔹 HTML ➜ Building page structure and semantics
🔹 CSS ➜ Styling layouts, colors, and responsiveness
🔹 JavaScript ➜ Adding interactivity and dynamic content
🔹 React ➜ Creating reusable UI components for SPAs
🔹 Vue.js ➜ Developing progressive web apps quickly
🔹 Angular ➜ Building complex enterprise-level applications
🔹 Node.js ➜ Running JavaScript on the server side
🔹 Express.js ➜ Creating lightweight web servers and APIs
🔹 Webpack ➜ Bundling, minifying, and optimizing code
🔹 Git ➜ Managing code versions and team collaboration
🔹 Docker ➜ Containerizing apps for consistent deployment
🔹 MongoDB ➜ Storing flexible NoSQL data for apps
🔹 PostgreSQL ➜ Handling relational data and queries
🔹 AWS ➜ Hosting, scaling, and managing cloud resources
🔹 Figma ➜ Designing and prototyping UI/UX interfaces

💬 Tap ❤️ if this helped!

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3.41K viewsedited 12:06

Web Development

✅ Beginner's Guide to Start with Web Development 💻🚀

1. Understand What Web Development Is
Building websites and apps using code for structure, style, and functionality.
Popular areas: Front-end (HTML/CSS/JS), back-end (Node.js/Python), full-stack.

2. Use a Trusted Toolset
Start with free editors like:
⦁ Visual Studio Code
⦁ Git for version control
⦁ Browser dev tools (Chrome/Firefox)
⦁ Node.js (for back-end basics)

3. Set Up Your Basics
Install VS Code, create a GitHub account, and learn how the web works (browsers, servers, HTTP).

4. Start Small
Build a simple HTML page first. Don't dive into frameworks until you grasp basics—web dev builds progressively.

5. Choose Core Languages First
Focus on HTML for structure, CSS for styling, JavaScript for interactivity. Avoid advanced tools like React early on.

6. Store & Organize Safely
For projects:
⦁ Use GitHub (short term repos)
⦁ Version control with Git (track changes securely)

7. Learn to Debug & Test
Understand terms like:
⦁ DOM (Document Object Model)
⦁ Responsive Design
⦁ Console Errors
⦁ Breakpoints

8. Be Aware of Best Practices
⦁ Never skip accessibility (alt tags, semantic HTML)
⦁ Avoid outdated code (use modern ES6+ JS)
⦁ Stick to responsive design for all devices

9. Understand Deployment & Hosting
⦁ Track progress with commits
⦁ Deploy free via GitHub Pages or Netlify

10. Keep Learning
Follow updates via MDN Web Docs, freeCodeCamp, or YouTube channels like Traversy Media. Study real projects before building complex ones.

💬 Tap ❤️ if you found this helpful!

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4.63K viewsedited 11:15

Web Development

✅ 50 Must-Know Web Development Concepts for Interviews 🌐💼

📍 HTML Basics
1. What is HTML?
2. Semantic tags (article, section, nav)
3. Forms and input types
4. HTML5 features
5. SEO-friendly structure

📍 CSS Fundamentals
6. CSS selectors & specificity
7. Box model
8. Flexbox
9. Grid layout
10. Media queries for responsive design

📍 JavaScript Essentials
11. let vs const vs var
12. Data types & type coercion
13. DOM Manipulation
14. Event handling
15. Arrow functions

📍 Advanced JavaScript
16. Closures
17. Hoisting
18. Callbacks vs Promises
19. async/await
20. ES6+ features

📍 Frontend Frameworks
21. React: props, state, hooks
22. Vue: directives, computed properties
23. Angular: components, services
24. Component lifecycle
25. Conditional rendering

📍 Backend Basics
26. Node.js fundamentals
27. Express.js routing
28. Middleware functions
29. REST API creation
30. Error handling

📍 Databases
31. SQL vs NoSQL
32. MongoDB basics
33. CRUD operations
34. Indexes & performance
35. Data relationships

📍 Authentication & Security
36. Cookies vs LocalStorage
37. JWT (JSON Web Token)
38. HTTPS & SSL
39. CORS
40. XSS & CSRF protection

📍 APIs & Web Services
41. REST vs GraphQL
42. Fetch API
43. Axios basics
44. Status codes
45. JSON handling

📍 DevOps & Tools
46. Git basics & GitHub
47. CI/CD pipelines
48. Docker (basics)
49. Deployment (Netlify, Vercel, Heroku)
50. Environment variables (.env)

Double Tap ♥️ For More

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5.3K views18:03