Explore JavaScript

Explore JavaScript Hey there! I'm Md Abdul Halim, a passionate JavaScript Web Developer who loves creating cool dynamic and interactive web experiences. Yep, I make them happen!

I use HTML, CSS, and JavaScript to build websites that look awesome and work smoothly. You know those interactive buttons, animations, and forms? I enjoy solving puzzles, and debugging code is like finding the missing pieces. It's like detective work for websites! Learning new things is my hobbies. The web world changes fast, and I'm always catching up on the latest tricks to make websites even be

tter. Teamwork is where the real test comes in. I collaborate with designers and other developers to bring ideas to life. When I'm not coding, I'm out exploring, cooking up a storm, or checking out what's new in tech. Wanna chat about websites, JavaScript, or anything tech? Reach out at [email protected], Let's build some cool things together!

This code snippet is shortly explain how it works:🔰 Importing Reactimport React from 'react';▪This line imports the Rea...
08/08/2025

This code snippet is shortly explain how it works:
🔰 Importing React

import React from 'react';
▪This line imports the React library, which is necessary to write React components.

🔰 Defining the Component

function App() {
return (

Hello World

);
}
▪This is a functional component named `App`.
▪ It returns JSX (JavaScript XML),.
▪ The JSX here renders a `div` containing an `h1` heading with the text "Hello World".

🔰 Exporting the Component
▪ This makes the `App` component available for import in other files.

🔰How This Works in a React Application:
▪this `App` component would be rendered in your main `index.js` file like this:

import React from 'react';
import ReactDOM from 'react-dom/client';
import App from './App';

createRoot(document.getElementById('root')).render(


,

);

▪ React takes this component, converts the JSX into HTML, and renders it inside the DOM element with the ID `root` (usually found in your `index.html` file).

🌐 Summary ✅ git init = Initialize a Git repo..✅ git add README.md = Stage a file.✅ git commit -m "first commit = Commi...
26/06/2025

🌐 Summary
✅ git init = Initialize a Git repo..
✅ git add README.md = Stage a file.
✅ git commit -m "first commit = Commit the file.
✅ git branch -M main = Rename the default branch to `main`.
✅ git remote add origin = Connect the local repo to GitHub.
✅ git push -u origin main = Push the code to GitHub.

Here's a step-by-step explanation:

✔ git init
Purpose: Initializes a new Git repository in the current directory.
What it does?
Creates a hidden `.git` folder in your project directory,
Setup the directory for tracking changes with Git.

---

✔ git add README.md.
Purpose: Stages the `README.md` file for commit.
What it does?
Adds `README.md` to the **staging area** (a temporary area where changes are prepared for committing).
Only changes in the staging area are included in the next commit.

✔ git commit -m "first commit"
Purpose: Creates a commit with the staged changes.
What it does:
- Takes all staged changes and saves them permanently in the Git history.
- The `-m` flag lets you add a commit message. "this is message body"

✔ git branch -M main.
Purpose: Renames the default branch from `master` to `main`.
What it does:
- Git traditionally used `master` as the default branch name, but many projects now use `main`.
- `-M` forcefully renames the branch (in case a `master` branch already exists).

✔ git remote add origin https://github.com/mdabdulhalim-bd/JavaScript-DOM.git`
Purpose: Links your local repository to a remote repository on GitHub.
What it does:
- Adds a remote named `origin` pointing to your GitHub repo's URL.

✔ git push -u origin main.
Purpose: Pushes your local commits to the remote repository (GitHub).
What it does:
Uploads the `main` branch and its commits to the remote (`origin`).
- The `-u` flag sets `origin/main` as the **upstream branch**, meaning future `git push` or `git pull` commands will default to `origin/main`.

21/06/2025

Let’s break down how this JavaScript function works step by step:
________________________________________
✅ Your Code:
function getNumber(number = "This is number") {
console.log(number);
}

getNumber();
________________________________________
🧠 How It Works:
1. Function Declaration:
function getNumber(number = "This is number") {
• You are defining a function named getNumber.
• It takes one parameter called number.
• The parameter has a default value: "This is number".
2. Default Parameter:
number = "This is number"
• If the function is called without any argument, then number will automatically be set to "This is number".
3. Inside the Function:
console.log(number);
• The function logs the number value to the console.
4. Function Call:
getNumber();
• You’re calling the function without passing any argument, so the default value is used.
________________________________________
🔍 What Happens at Runtime?
• getNumber() is called with no argument.
• JavaScript assigns the default value: number = "This is number".
• console.log(number) prints:
This is number
________________________________________
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