Generating Random Numbers

Globalization in React (2025 Trends & Best Practices)

npm install i18next react-i18next i18next-browser-languagedetector

Set up your translation files, detect user language, and switch languages dynamically using:

Implementing Internationalization (i18n) in a Large React Application (2025 Guide)

npx create-react-app react-i18n-demo
cd react-i18n-demo

Install the required dependencies:

Building Micro-Frontends with Webpack Module Federation (2025 Guide)

Use a design system or tokens for consistent UI/UX across micro-apps.

Use a centralized approach for auth tokens and route management — or pass them via shared context if needed.

State Management Beyond Redux: Using Zustand for Scalable React Apps

Getting started with Zustand is straightforward. Here's how you can integrate it into your React application:

   npm install zustand

May 03, 2025 Tutorial

Mastering React Rendering Performance with Memoization and Context

In this example, Greeting will only re-render when the name prop changes. This optimization is particularly beneficial for components that render frequently with the same props.([React][4], [Content That Scales][5])

Passing functions as props can cause child components to re-render unnecessarily because functions are recreated on every render. The useCallback hook memoizes functions, ensuring they maintain the same reference unless their dependencies change.([React][4])

May 03, 2025 Tutorial

How to Create a New MySQL User with Full Privileges

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May 01, 2025 Code

Comparison and Logical Operators

Logical operators combine multiple conditions or values.

// AND operator
console.log(true && true); // true
console.log(true && false); // false

// OR operator
console.log(false || true); // true
console.log(false || false); // false

// NOT operator
console.log(!true); // false
console.log(!false); // true

Arithmetic Operators

Increases a variable by one.
Postfix Increment (i++):

     let i = 5;
     console.log(i++); // Outputs 5, then i becomes 6
     console.log(i);   // Outputs 6

Non-Primitive Data Types (Objects, Arrays, and Functions)

Primitives hold a single value and are immutable.
Non-primitives hold collections or behaviors and are mutable.

Example:

Primitive Data Types

  let id = Symbol("id");
  console.log(id); // Symbol(id)

Use the typeof operator to check the type of a value.

Variables and Constants

Preferred for declaring variables that can change value.
Example:

     let age = 25;
     age = 26; // Allowed
     console.log(age); // 26

Hello World and Comments

     console.log("Hello, World!");

What happens?
The console.log() function outputs text to the console.
"Hello, World!" is a string (text) enclosed in double quotes.

Using Node.js to Run JavaScript

     Running JavaScript with Node.js!

Example of reading a file:

Running JavaScript in the Browser Console

Open the browser.
Right-click on the webpage and select Inspect or press Ctrl+Shift+I (Cmd+Option+I on macOS).
Go to the Console tab.

Open the browser.
Right-click on the webpage and select Inspect or press Ctrl+Shift+K (Cmd+Option+K on macOS).
Navigate to the Console tab.

Installing a Code Editor (e.g., VS Code)

Customize the editor's look by choosing a theme:
Navigate to File > Preferences > Color Theme.
Popular themes: Dark+, Dracula, Monokai.

Go to File > Preferences > Settings and search for "Auto Save."
Set it to afterDelay for smoother development.

JavaScript in Modern Web Development

Frameworks like Electron allow creating cross-platform desktop apps.
Example: Visual Studio Code.

JavaScript is used in IoT devices for controlling hardware and sensors.
Example: Node.js-based IoT applications.

History and Evolution

JavaScript was standardized under the name ECMAScript by ECMA International.
The first edition of ECMAScript (ES1) laid the foundation for modern JavaScript.

Competing browsers (Netscape, Internet Explorer) implemented JavaScript differently, leading to compatibility issues.
The advent of libraries like jQuery (2006) helped developers write cross-browser code more easily.

How to Create a Chrome Extension for Automating Tweets on X (Twitter)

We'll break the tutorial into clear, manageable steps so even if you're a beginner, you can follow along.

Before diving into the code, let's set up the structure for our Chrome extension. You'll need: