Web Coding With Ankur

Creating modern, fast-loading, and highly customizable web apps has never been easier with React , Vite , and Tailwind CSS . If you're a beginner , this guide will walk you through every step to set up a new project from scratch in 2025 using these cutting-edge technologies. 🚀 Why Use Vite + React + Tailwind? ⚡ Vite : A modern, ultra-fast build tool and development server for React. ⚛ React : A powerful library for building user interfaces. 💨 Tailwind CSS : A utility-first CSS framework for fast and responsive UI development. 🧰 Prerequisites Before we begin, make sure you have: Node.js installed (v18 or higher recommended) npm or yarn A code editor like VS Code Basic understanding of JavaScript and React 📦 Step 1: Create a React App Using Vite Run the following in your terminal: npm create vite@latest my-react-app --template react Or with yarn: yarn create vite my-react-app --template react Then in...

How to Fix npx tailwindcss init Error: “Could Not Determine Executable to Run” Are you getting this error while trying to initialize Tailwind CSS? npx tailwindcss init npm ERR! could not determine executable to run Don’t worry — this is a common issue that’s easy to fix if you understand what’s causing it. This post will guide you step-by-step on how to resolve it. 🔍 Why This Error Happens You haven’t installed the tailwindcss package. You don’t have a package.json file in your project. npx doesn’t know what to run because the executable is missing. ✅ Fix 1: Install Tailwind CSS Before Running the Command First, install Tailwind CLI in your project: npm install -D tailwindcss Now run the init command: npx tailwindcss init ✅ Fix 2: Make Sure You Have package.json If your project is missing package.json , run: npm init -y npm install -D tailwindcss npx tailwindcss init ✅ Fix 3: Clear NPX Cache Sometimes cle...

📌 Introduction JavaScript is a language designed to treat functions as first-class citizens. This means you can pass functions as arguments, return them from other functions, and assign them to variables — opening the door to higher-order functions . One of the most widely used higher-order functions is filter() . In this blog, we'll take a deep dive into: What is a higher-order function in JavaScript? What is filter() and why it's considered a higher-order function? Real-world examples of using filter() Code snippets to boost your learning Q&A to answer common developer queries 🔍 What is a Higher-Order Function in JavaScript? A higher-order function is any function that does at least one of the following: Takes another function as an argument (callback function) Returns a function as its result function greetUser(greetingFn) { greetingFn(); } function sayHello() { console.log...

🔍 Introduction: Why Care About useCallback in React? In modern React development, optimizing performance is critical — especially as your app scales. Ever encountered laggy UI or unnecessary component re-renders when passing functions as props? That’s where the useCallback hook steps in. The useCallback hook is often misunderstood or misused, yet it plays a crucial role in ensuring your components don't re-render more than they need to. In this post, we’ll break down everything you need to know about useCallback — with code examples , real-world analogies , and answers to frequently asked developer questions . 🔧 What is useCallback in React? useCallback is a React Hook that returns a memoized version of a callback function. This means the function won’t be recreated on every render , unless its dependencies change. const memoizedCallback = useCallback(() => { doSomething(a, b); }, [a, b]); This becomes essential when you’re passing functions to child compone...

React is known for its performance and component-based architecture. But as your app grows, rendering performance can become a bottleneck—especially when working with expensive calculations , large data sets , or frequent re-renders . That's where useMemo Hook shines. In this post, we'll explore: ✅ What is useMemo in React? ✅ Why and when should you use it? ✅ Real-world analogies & examples ✅ Common use cases and best practices ✅ Frequently asked questions by React developers ✅ Code examples to guide your implementation Keywords Included: useMemo Hook, performance optimization, memoizing computations, expensive calculations, preventing unnecessary re-renders, React components, stable references, React DevTools, state management, memoization techniques, large data sets, complexity management, function dependencies, child component optimization 🧠 What is useMemo in React? useMemo is a React Hook that memoizes the result of a computatio...

“Why should I use Promises instead of callbacks?” This is one of the most frequently asked questions by JavaScript learners. In this guide, we’ll answer it completely — with real-world examples, visuals, and deep explanation. 📦 What is a Promise in JavaScript? A Promise is a built-in JavaScript object that represents the eventual completion (or failure) of an asynchronous operation — and its resulting value. 🤯 Think of it like this: You order a pizza 🍕 (an async task). The restaurant gives you a promise — "We'll deliver it!" While the pizza is being prepared, you do other things . Eventually, you get the pizza (success ✅) or a refund (failure ❌). That’s exactly how Promises work in JavaScript. They’re a smarter way to deal with asynchronous code , without falling into callback hell. ⏳ Why Do We Need Promises? Before Promises, developers used callback functions to handle async tasks like data fetching or timers. But as tasks grew in c...

In JavaScript, a closure is created when a function "remembers" the variables from its outer scope even after the outer function has finished executing . This concept allows functions to access variables from an enclosing scope or function — even after that outer function has returned. Closures are a powerful feature in JavaScript that enable data encapsulation, callback handling, and the creation of private variables. 💡 Let's Understand with an Example function outerFunction() { let outerVariable = "I am from outer scope!"; function innerFunction() { console.log(outerVariable); // Accessing variable from outer scope } return innerFunction; } const closureFunc = outerFunction(); closureFunc(); // Output: I am from outer scope! 🔍 Explanation: outerFunction defines a variable outerVariable . innerFunction is declared inside outerFunction and uses that variable. Even after outerFunction() has finished executing, innerFunc...