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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
Показати більше📈 Аналітичний огляд Telegram-каналу Web Development
Канал Web Development (@webdevcoursefree) у мовному сегменті Англійська є активним учасником. На даний момент спільнота об'єднує 78 440 підписників, посідаючи 1 639 місце в категорії Технології та додатки та 4 112 місце у регіоні Індія.
📊 Показники аудиторії та динаміка
З моменту свого створення невідомо, проект продемонстрував стрімке зростання, зібравши аудиторію у 78 440 підписників.
За останніми даними від 13 червня, 2026, канал демонструє стабільну активність. Хоча за останні 30 днів спостерігається зміна кількості учасників на 580, а за останні 24 години на 37, загальне охоплення залишається високим.
- Статус верифікації: Не верифікований
- Рівень залученості (ER): Середній показник залученості аудиторії становить 3.60%. Протягом перших 24 годин після публікації контент зазвичай збирає 1.29% реакцій від загальної кількості підписників.
- Охоплення публікацій: В середньому кожен допис отримує 2 819 переглядів. Протягом першої доби публікація в середньому набирає 1 012 переглядів.
- Реакції та взаємодія: Аудиторія активно підтримує контент: середня кількість реакцій на один пост – 11.
- Тематичні інтереси: Контент зосереджений навколо ключових тем, таких як html, css, javascript, github, git.
📝 Опис та контентна політика
Автор описує ресурс як майданчик для висловлення суб'єктивної думки:
“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”
Завдяки високій частоті оновлень (останні дані отримано 14 червня, 2026), канал підтримує актуальність та високий рівень охоплення публікацій. Аналітика показує, що аудиторія активно взаємодіє з контентом, що робить його важливою точкою впливу в категорії Технології та додатки.
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Підписники
+3724 години
+1467 днів
+58030 день
Архів дописів
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Top 10 CSS Interview Questions
1. What is CSS and what are its key features?
CSS (Cascading Style Sheets) is a stylesheet language used to describe the presentation of a document written in HTML or XML. Its key features include controlling layout, styling text, setting colors, spacing, and more, allowing for a separation of content and design for better maintainability and flexibility.
2. Explain the difference between inline, internal, and external CSS.
- Inline CSS is applied directly within an HTML element using the
style attribute.
- Internal CSS is defined within a <style> tag inside the <head> section of an HTML document.
- External CSS is linked to an HTML document via the <link> tag and is written in a separate .css file.
3. What is the CSS box model and what are its components?
The CSS box model describes the rectangular boxes generated for elements in the document tree and consists of four components:
- Content: The actual content of the element.
- Padding: The space between the content and the border.
- Border: The edge surrounding the padding.
- Margin: The space outside the border that separates the element from others.
4. How do you center a block element horizontally using CSS?
To center a block element horizontally, you can use the margin: auto; property. For example:
.center {
width: 50%;
margin: auto;
}*)
- Element selector (element)
- Class selector (.class)
- ID selector (#id)
- Attribute selector ([attribute])
- Pseudo-class selector (:pseudo-class)
- Pseudo-element selector (::pseudo-element)
6. Explain the difference between absolute, relative, fixed, and sticky positioning in CSS.
- relative: The element is positioned relative to its normal position.
- absolute: The element is positioned relative to its nearest positioned ancestor or the initial containing block if none exists.
- fixed: The element is positioned relative to the viewport and does not move when the page is scrolled.
- sticky: The element is treated as relative until a given offset position is met in the viewport, then it behaves as fixed.
7. What is Flexbox and how is it used in CSS?
Flexbox (Flexible Box Layout) is a layout model that allows for more efficient arrangement of elements within a container. It is used to align and distribute space among items in a container, even when their size is unknown or dynamic. Flexbox is enabled by setting display: flex; on a container element.
8. How do you create a responsive design in CSS?
Responsive design can be achieved using media queries, flexible grid layouts, and relative units like percentages, em, and rem. Media queries adjust styles based on the viewport's width, height, and other characteristics. For example:
@media (max-width: 600px) {
.container {
width: 100%;
}
}@keyframes rule to define the animation and the animation property to apply it to an element. For example:
@keyframes example {
from {background-color: red;}
to {background-color: yellow;}
}
.element {
animation: example 5s infinite;
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🧠 Key Learning
• Use preventDefault() to stop submission
• Use .trim() to remove extra spaces
• Show errors in UI instead of alerts
• Validate fields one by one
Double Tap ♥️ For More
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Now, let's move to the next topic in Web Development Roadmap:
✅ Form Validation using JavaScript
Form validation checks user input before submission.
👉 Ensures data is correct
👉 Prevents wrong or empty data
👉 Improves security and user experience
🧠 Why Form Validation Matters
Without validation
• Empty forms get submitted
• Wrong emails stored
• Bad data in database
Real examples
• Email format check
• Password rules
• Required fields
🔍 Types of Form Validation
🔹 1. HTML Validation (Built-in)
Browser handles validation automatically.
Example <input type="email" required>
✔️ Checks empty field
✔️ Checks email format
🔹 2. JavaScript Validation (Custom Logic)
You control validation rules.
Used for
• Password strength
• Custom messages
• Complex conditions
📤 Basic Form Validation Flow
1️⃣ User submits form
2️⃣ JavaScript checks input
3️⃣ If invalid → show error
4️⃣ If valid → submit form
✍️ Check Empty Input
HTML
<form id="form">
<input type="text" id="username">
<button>Submit</button>
</form>
const form = document.getElementById("form");
form.addEventListener("submit", (e) => {
const username = document.getElementById("username").value;
if (username === "") {
e.preventDefault();
alert("Username is required");
}
});
const email = document.getElementById("email").value;
if (!email.includes("@")) {
alert("Enter valid email");
}
if (password.length < 6) {
alert("Password must be at least 6 characters");
}
<input type="text" id="username">
<p id="error"></p>
if (username === "") {
error.textContent = "Username required";
}
<form id="form">
<input type="text" id="username" placeholder="Enter username">
<input type="text" id="email" placeholder="Enter email">
<input type="password" id="password" placeholder="Enter password">
<p id="error" style="color: red;"></p>
<button type="submit">Submit</button>
</form>
const form = document.getElementById("form");
const error = document.getElementById("error");
form.addEventListener("submit", (e) => {
const username = document.getElementById("username").value.trim();
const email = document.getElementById("email").value.trim();
const password = document.getElementById("password").value.trim();
error.textContent = ""; // clear previous errors
// Username validation
if (username === "") {
e.preventDefault();
error.textContent = "Username is required";
return;
}
// Email validation
if (!email.includes("@")) {
e.preventDefault();
error.textContent = "Enter a valid email";
return;
}
// Password validation
if (password.length < 6) {
e.preventDefault();
error.textContent = "Password must be at least 6 characters";
return;
}
});
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Master Javascript :
The JavaScript Tree 👇
|
|── Variables
| ├── var
| ├── let
| └── const
|
|── Data Types
| ├── String
| ├── Number
| ├── Boolean
| ├── Object
| ├── Array
| ├── Null
| └── Undefined
|
|── Operators
| ├── Arithmetic
| ├── Assignment
| ├── Comparison
| ├── Logical
| ├── Unary
| └── Ternary (Conditional)
||── Control Flow
| ├── if statement
| ├── else statement
| ├── else if statement
| ├── switch statement
| ├── for loop
| ├── while loop
| └── do-while loop
|
|── Functions
| ├── Function declaration
| ├── Function expression
| ├── Arrow function
| └── IIFE (Immediately Invoked Function Expression)
|
|── Scope
| ├── Global scope
| ├── Local scope
| ├── Block scope
| └── Lexical scope
||── Arrays
| ├── Array methods
| | ├── push()
| | ├── pop()
| | ├── shift()
| | ├── unshift()
| | ├── splice()
| | ├── slice()
| | └── concat()
| └── Array iteration
| ├── forEach()
| ├── map()
| ├── filter()
| └── reduce()|
|── Objects
| ├── Object properties
| | ├── Dot notation
| | └── Bracket notation
| ├── Object methods
| | ├── Object.keys()
| | ├── Object.values()
| | └── Object.entries()
| └── Object destructuring
||── Promises
| ├── Promise states
| | ├── Pending
| | ├── Fulfilled
| | └── Rejected
| ├── Promise methods
| | ├── then()
| | ├── catch()
| | └── finally()
| └── Promise.all()
|
|── Asynchronous JavaScript
| ├── Callbacks
| ├── Promises
| └── Async/Await
|
|── Error Handling
| ├── try...catch statement
| └── throw statement
|
|── JSON (JavaScript Object Notation)
||── Modules
| ├── import
| └── export
|
|── DOM Manipulation
| ├── Selecting elements
| ├── Modifying elements
| └── Creating elements
|
|── Events
| ├── Event listeners
| ├── Event propagation
| └── Event delegation
|
|── AJAX (Asynchronous JavaScript and XML)
|
|── Fetch API
||── ES6+ Features
| ├── Template literals
| ├── Destructuring assignment
| ├── Spread/rest operator
| ├── Arrow functions
| ├── Classes
| ├── let and const
| ├── Default parameters
| ├── Modules
| └── Promises
|
|── Web APIs
| ├── Local Storage
| ├── Session Storage
| └── Web Storage API
|
|── Libraries and Frameworks
| ├── React
| ├── Angular
| └── Vue.js
||── Debugging
| ├── Console.log()
| ├── Breakpoints
| └── DevTools
|
|── Others
| ├── Closures
| ├── Callbacks
| ├── Prototypes
| ├── this keyword
| ├── Hoisting
| └── Strict mode
|
| END __
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Which event is triggered when a user types inside an input field?
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Which method is used to attach an event listener in JavaScript?
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