¡Ya disponible! Investigación de Telegram 2025 — los principales insights del año 
Web Development
Ir al canal en Telegram
Learn Web Development From Scratch 0️⃣ HTML / CSS 1️⃣ JavaScript 2️⃣ React / Vue / Angular 3️⃣ Node.js / Express 4️⃣ REST API 5️⃣ SQL / NoSQL Databases 6️⃣ UI / UX Design 7️⃣ Git / GitHub Admin: @love_data
Mostrar más📈 Análisis del canal de Telegram Web Development
El canal Web Development (@webdevcoursefree) en el segmento lingüístico de Inglés es un actor destacado. Actualmente la comunidad reúne a 78 374 suscriptores, ocupando la posición 1 635 en la categoría Tecnologías y Aplicaciones y el puesto 4 127 en la región India.
📊 Métricas de audiencia y dinámica
Desde su creación el невідомо, el proyecto ha mostrado un crecimiento acelerado, reuniendo a 78 374 suscriptores.
Según los últimos datos del 12 junio, 2026, el canal mantiene una actividad estable. En los últimos 30 días la variación de miembros fue de 562, y en las últimas 24 horas de 4, conservando un alto alcance.
- Estado de verificación: No verificado
- Tasa de interacción (ER): El promedio de interacción de la audiencia es 3.80%. Durante las primeras 24 horas tras publicar, el contenido suele obtener 1.31% de reacciones respecto al total de suscriptores.
- Alcance de las publicaciones: Cada publicación recibe en promedio 2 981 visualizaciones. En el primer día suele acumular 1 027 visualizaciones.
- Reacciones e interacción: La audiencia responde de forma activa: el promedio de reacciones por publicación es 10.
- Intereses temáticos: El contenido se centra en temas clave como html, css, javascript, github, git.
📝 Descripción y política de contenido
El autor describe el recurso como un espacio para expresar opiniones subjetivas:
“Learn Web Development From Scratch
0️⃣ HTML / CSS
1️⃣ JavaScript
2️⃣ React / Vue / Angular
3️⃣ Node.js / Express
4️⃣ REST API
5️⃣ SQL / NoSQL Databases
6️⃣ UI / UX Design
7️⃣ Git / GitHub
Admin: @love_data”
Gracias a la alta frecuencia de actualizaciones (últimos datos recibidos el 13 junio, 2026), el canal mantiene la vigencia y un amplio alcance. La analítica demuestra que la audiencia interactúa activamente con el contenido, lo que lo convierte en un punto de referencia dentro de la categoría Tecnologías y Aplicaciones.
78 374
Suscriptores
+424 horas
+1217 días
+56230 días
Archivo de publicaciones
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Now, let's move to the next topic in the Web Development Roadmap:
🔧 Git GitHub for Developers 💼
👉 Git = Track code changes
👉 GitHub = Store share code online
🧠 1. What is Git?
👉 Git = Version Control System
It helps you:
• Track code changes
• Restore old versions
• Collaborate with team
💡 Think: Like “Ctrl + Z for projects” 😄
🌐 2. What is GitHub?
👉 GitHub is a platform to:
• Store code online
• Share projects
• Collaborate with developers
💡 Recruiters often check GitHub profiles 👀
🔥 3. Basic Git Workflow
Code → git add → git commit → git push → GitHub
⚡ 4. Important Git Commands
🔹 Initialize Git
git init
🔹 Check Status
git status
🔹 Add Files
git add .
🔹 Save Changes
git commit -m "Initial commit"
🔹 Connect to GitHub
git remote add origin URL
🔹 Push Code
git push origin main
🌿 5. Branching (Important for Teams)
👉 Branch = separate workspace
git branch feature-login
👉 Helps developers work independently
🔄 6. Pull Clone
Clone Project
git clone URL
Pull Latest Changes
git pull
🎯 Mini Practical Task
✅ Install Git
✅ Create GitHub account
✅ Create repository
✅ Push your HTML/CSS project
💡 Pro Tips
• Commit regularly
• Write meaningful commit messages
• Push projects to GitHub daily
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Which keyword is used with async functions to wait for a result?
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🚀 Advanced JavaScript
👉 This is where most interview questions come from
🧠 1. ES6+ Features (Modern JavaScript)
🔹 Arrow Functions
const add = (a, b) => a + b;
🔹 Destructuring
const user = { name: "Sid", age: 26 };
const { name, age } = user;
🔹 Spread Operator
let arr = [1,2,3];
let newArr = [...arr, 4];
👉 Makes code clean readable
🔄 2. Array Methods (Very Important 🔥)
🔹 map()
👉 Transform data
let nums = [1,2,3];
let result = nums.map(n => n * 2);
🔹 filter()
👉 Filter data
let nums = [1,2,3,4];
let even = nums.filter(n => n % 2 === 0);
🔹 reduce()
👉 Aggregate data
let nums = [1,2,3];
let sum = nums.reduce((acc, curr) => acc + curr, 0);
🌐 3. Fetch API (Connect to Backend)
fetch("https://api.example.com/data")
.then(res => res.json())
.then(data => console.log(data));
👉 Used to get data from APIs
🔥 4. Promises (Core Concept)
👉 Handle async operations
let promise = new Promise((resolve, reject) => {
resolve("Success");
});
States:
• Pending
• Resolved
• Rejected
⚡ 5. Async / Await (Modern Way)
async function getData() {
let res = await fetch("url");
let data = await res.json();
console.log(data);
}
👉 Cleaner than .then()
🔁 6. Event Loop
👉 JavaScript is single-threaded
• Call Stack
• Callback Queue
• Event Loop
👉 Ensures async code runs smoothly
🎯 Mini Project
👉 Create:
• Fetch API data (like users)
• Display on webpage
💡 Pro Tips
> Focus on:
• Promises
• Async/Await
• Fetch API
> Practice real APIs (JSONPlaceholder)
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⚡ JavaScript Interview Questions with Answers
Q1. What is JavaScript?
👉 JavaScript is a programming language used to add interactivity to web pages (clicks, forms, dynamic updates).
Q2. Difference between let, const, and var?
- var → function scoped (old, avoid)
- let → block scoped (can change value)
- const → block scoped (cannot reassign)
💡 Example:
let a = 10;
a = 20; // allowed
const b = 10;
// b = 20 ❌ error
Q3. What is the DOM?
👉 DOM = Document Object Model
It allows JavaScript to access and modify HTML elements
Q4. What is an event in JavaScript?
👉 Any user action:
- click
- input
- submit
Q5. What is a function?
👉 A reusable block of code
function greet() {
console.log("Hello");
}
Q6. What is a closure?
👉 A function that remembers variables from its outer scope
function outer() {
let count = 0;
return function inner() {
count++;
console.log(count);
};
}
Q7. What is hoisting?
👉 Variables & functions are moved to top of scope during execution
💡 Only declaration is hoisted, not value
Q8. Difference between == and ===?
- == → compares value (loose)
- === → compares value + type (strict)
5 == "5" // true
5 === "5" // false
Q9. What is an arrow function?
👉 Short syntax for functions
const add = (a, b) => a + b;
Q10. What is an array?
👉 Collection of values
let arr = [1, 2, 3];
Q11. What is a Promise?
👉 Represents a future value (async operation)
States:
- Pending
- Resolved
- Rejected
Q12. What is async/await?
👉 Cleaner way to handle promises
async function getData() {
let res = await fetch("url");
}
Q13. What is the Event Loop?
👉 Handles asynchronous operations in JavaScript
💡 Ensures non-blocking execution
Q14. What is callback function?
👉 Function passed as argument
function greet(name, callback) {
callback(name);
}
Q15. What is debouncing?
👉 Limits function execution frequency
💡 Used in:
- Search bars
- Resize events
🔥 Coding Question
Q Reverse a String
function reverse(str) {
return str.split('').reverse().join('');
}
💡 Pro Tips (From Interview POV)
Focus on:
- Closures
- Promises + Async/Await
- DOM
- Event Loop
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Which keyword is used to declare a variable in modern JavaScript?
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⚡ JavaScript Basics (Make Your Website Alive 🧠🔥)
👉 HTML = Structure
👉 CSS = Design
👉 JavaScript = Brain (Logic + Interactivity)
🧠 What is JavaScript?
👉 Programming language used to:
• Add interactivity
• Handle user actions
• Update content dynamically
💡 Example:
• Button click
• Form validation
• Show/hide elements
🔑 Variables (Store Data)
let name = "Deepak";
let age = 25;
👉 Used to store values
🔁 Conditions (Decision Making)
if (age > 18) {
console.log("Adult");
}
🔄 Loops (Repeat Work)
for (let i = 1; i <= 5; i++) {
console.log(i);
}
🔧 Functions (Reusable Code)
function greet() {
console.log("Hello World");
}
greet();
🌐 DOM Manipulation (Most Important 🔥)
👉 DOM = Document Object Model
👉 Lets you control HTML using JS
document.getElementById("title").innerText = "Hello JS 🚀";
💡 You can:
• Change text
• Change styles
• Add/remove elements
🖱️ Events (User Actions)
document.getElementById("btn").addEventListener("click", function() {
alert("Button clicked!");
});
👉 Common events:
• click
• input
• submit
🎯 Mini Project
👉 Create a button:
• On click → change text
• On click → change background color
⚡ Mini Project – Complete Solution (Button Interaction) 🔥
👉 Button click → change text + change background color
💻 Full Code
<!DOCTYPE html>
<html>
<head>
<title>JS Mini Project</title>
<style>
body {
text-align: center;
margin-top: 50px;
}
button {
padding: 10px 20px;
font-size: 18px;
cursor: pointer;
}
</style>
</head>
<body>
<h1 id="title">Hello World 👋</h1>
<button id="btn">Click Me 🚀</button>
<script>
document.getElementById("btn").addEventListener("click", function() {
// Change text
document.getElementById("title").innerText = "You clicked the button! 🎉";
// Change background color
document.body.style.backgroundColor = "lightblue";
});
</script>
</body>
</html>
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Now, let's move to the next topic in the Web Development Roadmap:
🎨 CSS (Make Your Website Beautiful 🔥)
👉 HTML builds structure, CSS makes it look amazing
🧠 What is CSS?
👉 CSS = Cascading Style Sheets
Used to style HTML elements
Controls:
• Colors 🎨
• Fonts ✍️
• Spacing 📏
• Layout 📱
🔗 How to Add CSS?
✅ 1. Inline CSS
<h1 style="color:red;">Hello</h1>
<style>
h1 {
color: blue;
}
</style>
<link rel="stylesheet" href="style.css">
h1 {
color: green;
}
.container {
display: flex;
justify-content: center;
align-items: center;
}
@media (max-width: 600px) {
body {
background-color: lightblue;
}
}
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