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 transcriptional control at the DNA level
- Anderson Rocha (University of Campinas, Brazil) will give a presentation entitled “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.
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 transcriptional control at the DNA level
- Anderson Rocha (University of Campinas, Brazil) will give a presentation entitled “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.
❤8👏2
✅ 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:
💡 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:
💡 You can add CSS inside <style> tags, or link an external CSS file. In 2025, master Flexbox for layouts:
3️⃣ JavaScript
Purpose: Makes your site interactive – clicks, animations, data changes.
Think of it like the brain of the site.
Example:
💡 When you click the button, it shows a popup. Level up with event listeners:
👶 Mini Project Example
✅ Summary:
⦁ HTML = structure
⦁ CSS = style
⦁ JavaScript = interactivity
Mastering these 3 is your first step to becoming a web developer!
💬 Tap ❤️ for more!
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>
<title>My First Page</title>
</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:
<script>
function greet() {
alert("Welcome to my site!");
}
</script>
<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>
<title>Simple Site</title>
<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!
❤21👍1
✅ 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):
Example (Media Query):
🔹 2. CSS Frameworks
Why: Pre-built styles save time and help maintain consistency.
Bootstrap Example:
Tailwind CSS Example:
🔹 3. JavaScript Libraries (jQuery Basics)
Why: Simplifies DOM manipulation and AJAX requests (still useful in legacy projects).
Example (Hide Element):
🔹 4. Form Validation with JavaScript
Why: Ensure users enter correct data before submission.
Example:
🔹 5. Dynamic DOM Manipulation
Why: Add interactivity (like toggling dark mode, modals, menus).
Dark Mode Example:
🔹 6. Performance Optimization Tips
⦁ Compress images (use WebP)
⦁ Minify CSS/JS
⦁ Lazy load images
⦁ Use fewer fonts
⦁ Avoid blocking scripts in
📌 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!
🔹 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>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
$("#btn").click(function() {
$("#text").hide();
});
</script>
🔹 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>
<script>
function validateForm() {
const email = document.getElementById("email").value;
if (email === "") {
alert("Email is required");
return false;
}
}
</script>
🔹 5. Dynamic DOM Manipulation
Why: Add interactivity (like toggling dark mode, modals, menus).
Dark Mode Example:
<button onclick="toggleTheme()">Toggle Dark Mode</button>
<script>
function toggleTheme() {
document.body.classList.toggle("dark-mode");
}
</script>
<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 scripts 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!
❤9👍1
✅ 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.
2️⃣ git status
Check what changes are untracked or modified.
3️⃣ git add
Add files to staging area (preparing them for commit).
4️⃣ git commit
Save the snapshot with a message.
5️⃣ git log
See the history of commits.
🌐 Using GitHub
6️⃣ git remote add origin
Connect your local repo to GitHub.
7️⃣ git push
Push your local commits to GitHub.
8️⃣ git pull
Pull latest changes from GitHub.
👥 Collaboration Basics
🔀 Branching & Merging
🔁 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!
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!
❤11👍2
💻 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:
Step 2: Create a file server.js
Step 3: Run the server
In terminal, run:
Step 4: Test the server
Open your browser and go to:
https://localhost:3000/users
You should see:
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!
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 https://localhost:${port});
});Step 3: Run the server
In terminal, run:
node server.js
Step 4: Test the server
Open your browser and go to:
https://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!
❤14
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✅ 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)
Step 2: Create server.js
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!
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 https://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!
❤8🔥1
✅ 🔤 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!
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!
❤12
A brief introduction to object oriented programming OOP in Javascript programming language in a practical way with simple examples
❤2