Web Development - HTML, CSS & JavaScript
Learn to code and become a Web Developer with HTML, CSS, JavaScript , Reactjs, Wordpress, PHP, Mern & Nodejs knowledge Managed by: @love_data
Show more📈 Analytical overview of Telegram channel Web Development - HTML, CSS & JavaScript
Channel Web Development - HTML, CSS & JavaScript (@javascript_courses) in the English language segment is an active participant. Currently, the community unites 55 666 subscribers, ranking 2 378 in the Technologies & Applications category and 6 196 in the India region.
📊 Audience metrics and dynamics
Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 55 666 subscribers.
According to the latest data from 26 October, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -4 over the last 30 days and by -3 over the last 24 hours, overall reach remains high.
- Verification status: Not verified
- Engagement rate (ER): The average audience engagement rate is 3.66%. Within the first 24 hours after publication, content typically collects 1.17% reactions from the total number of subscribers.
- Post reach: On average, each post receives 2 037 views. Within the first day, a publication typically gains 652 views.
- Reactions and interaction: The audience actively supports content: the average number of reactions per post is 3.
- Thematic interests: Content is focused on key topics such as javascript, css, object, html, array.
📝 Description and content policy
The author describes the resource as a platform for expressing subjective opinions:
“Learn to code and become a Web Developer with HTML, CSS, JavaScript , Reactjs, Wordpress, PHP, Mern & Nodejs knowledge
Managed by: @love_data”
Thanks to the high frequency of updates (latest data received on 27 October, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.
<!DOCTYPE html>
<html>
<body>
<h1 id="title">Hello World</h1>
</body>
</html>
JavaScript can access this element using its ID.
const heading = document.getElementById("title");
console.log(heading);
🌳 2. DOM Tree Structure
Every HTML page is organized like a tree.
Document
│
└── html
│
├── head
│
└── body
│
├── h1
├── p
└── button
JavaScript can navigate this tree to access or modify elements.
🔍 3. Selecting Elements
By ID
const title = document.getElementById("title");
By Class
const boxes = document.getElementsByClassName("box");
By Tag Name
const paragraphs = document.getElementsByTagName("p");
Using querySelector()
Returns the first matching element.
const button = document.querySelector(".btn");
Using querySelectorAll()
Returns all matching elements.
const buttons = document.querySelectorAll(".btn");
✏️ 4. Changing Content
Using textContent
const heading = document.getElementById("title");
heading.textContent = "Welcome";
Using innerHTML
heading.innerHTML = "<span>Hello JavaScript</span>";
Difference
textContent: Plain text
innerHTML: Supports HTML
🎨 5. Changing Styles
const heading = document.getElementById("title");
heading.style.color = "blue";
heading.style.fontSize = "40px";
🏷️ 6. Working with CSS Classes
Add Class
element.classList.add("active");
Remove Class
element.classList.remove("active");
Toggle Class
element.classList.toggle("dark");
➕ 7. Creating New Elements
const para = document.createElement("p");
para.textContent = "This is a new paragraph.";
📌 8. Adding Elements to the Page
document.body.appendChild(para);
❌ 9. Removing Elements
const box = document.getElementById("box");
box.remove();
🔁 10. Replacing Elements
const newHeading = document.createElement("h2");
newHeading.textContent = "New Heading";
heading.replaceWith(newHeading);
🖱️ 11. Event Listeners
Events make webpages interactive.
Click Event
const button = document.querySelector("button");
button.addEventListener("click", () => {
console.log("Button clicked");
});
Double Click
button.addEventListener("dblclick", () => {
console.log("Double Clicked");
});
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