From research labs to everyday life — AI is reshaping how we work, create, and solve problems at an unprecedented pace. Driven by breakthroughs in machine learning, massive datasets, and powerful computing, AI adoption is accelerating across industries — from healthcare and finance to education and entertainment — transforming what machines can do and raising important questions about the future.
What is REST?
REST (Representational State Transfer) is an architectural style where APIs expose multiple endpoints, each representing a resource.
Example REST API Request:
GET /users/1
Example REST Response:
{ "id": 1, "name": "Abhishek", "email": "abhishek@example.com" }
What is GraphQL?
GraphQL is a query language for APIs that allows clients to request exactly the data they need.
Example GraphQL Query:
query { user(id: 1) { name email } }
Example GraphQL Response:
{ "data": { "user": { "name": "Abhishek", "email": "abhishek@example.com" } } }
REST is reliable, simple, and battle-tested, while GraphQL offers flexibility and efficiency for modern applications. The choice depends on your project requirements, team expertise, and scalability needs.
Next.js gives you the full-stack superpowers of React — server rendering, file-based routing, and edge-ready APIs — wrapped in a developer experience so smooth it feels like cheating. Ship faster, scale effortlessly, and stop worrying about the boring parts.
The map() method transforms each element in an array and returns a new array with the modified values.
Code:
const numbers = [1, 2, 3, 4]; const doubled = numbers.map(num => num * 2); console.log(doubled); // [2, 4, 6, 8]
The filter() method creates a new array with elements that pass a specific condition.
Code:
const numbers = [1, 2, 3, 4, 5]; const evenNumbers = numbers.filter(num => num % 2 === 0); console.log(evenNumbers); // [2, 4]
The reduce() method reduces an array to a single value by applying a function repeatedly.
Code:
const numbers = [1, 2, 3, 4]; const sum = numbers.reduce((acc, curr) => acc + curr, 0); console.log(sum); // 10
Mastering these three methods will make your JavaScript code more concise, readable, and powerful.
Happy Coding! 🚀
Stores data permanently in the browser (until manually cleared).
Key Features:
Code:
// Save data
localStorage.setItem("theme", "dark");
// Get data
const theme = localStorage.getItem("theme");
// Remove
localStorage.removeItem("theme");
Stores data only for the current tab session only for the current tab session.
Code:
// Save data
sessionStorage.setItem("step", "2");
// Get data
const step = sessionStorage.getItem("step");
// Clear
sessionStorage.clear();
Cookies are small pieces of data stored in the browser and automatically sent to the server with every HTTP request.
Code:
// Set cookie document.cookie = "username=Abhishek; expires=Fri, 31 Dec 2026 12:00:00 UTC; path=/"; // Read cookies console.log(document.cookie); // Delete cookie document.cookie = "username=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/";
Node.js is a runtime environment that allows you to execute JavaScript outside the browser.
It uses:
🌐 Create a Basic HTTP Server:
const http = require("http");
const server = http.createServer((req, res) => {
if (req.url === "/") {
res.write("Home Page");
} else if (req.url === "/about") {
res.write("About Page");
} else {
res.write("404 Not Found");
}
res.end();
});
server.listen(3000, () => {
console.log("Server running on http://localhost:3000");
});
Node.js is a powerful tool that allows you to build backend systems using JavaScript.