Controlled vs Uncontrolled Components in React

Developers, are you still relying on legacy AJAX or heavy external libraries for file uploads? 🛑 It's time to upgrade your frontend stack. We've published a deep-dive tutorial on creating a high-performance Drag & Drop Multiple File Uploader using the modern, promise-based Fetch API. This approach leads to cleaner, more maintainable code and a superior user experience. This isn't just a snippet; it's a structural approach to handling asynchronous file transfers efficiently. If you're building high-traffic applications, this is a must-watch/must-read. Watch the full demonstration: https://lnkd.in/eK8crn6R Access the written guide and complete source code: https://lnkd.in/ejYHhPXq #JavaScript #FrontendDevelopment #WebPerformance #FetchAPI #SoftwareEngineering

useActionState() => Simplifying Async Actions React’s useActionState() hook takes away a lot of pain from managing async states like loading, error, or success. It’s especially powerful for forms or buttons that trigger async actions. Example :- const [state, formAction] = useActionState(async (prev, formData) => { const result = await sendData(formData); return result; }, null); Now, you can easily track: 1- state.pending 2- state.success 3- state.error No need for multiple useState hooks or extra boilerplate! I’ve started using it in a React + Express form workflow, it’s so much cleaner. What’s your favorite way to manage async form states? #React #MERNStack #JavaScript #FrontendDevelopment

Even an empty JS file triggers the creation of a Global Execution Context (GEC) — and with it, the global object and the this keyword. 🔍 In browsers, this === window 🖥️ In Node.js, this === {} (module scope) But here’s the twist: the global object isn’t created by the JS engine (like V8) — it’s provided by the environment (browser or Node.js). 💡 Want a consistent way to access the global object across platforms? Say hello to globalThis — introduced in ES2020 to unify window and global. 📊 I’ve broken this down into a slide deck with examples, call stack behavior, and input-output questions to help you master the concept. 👇 Check out the slides and let me know what surprised you most! #JavaScript #Frontend #NodeJS #InterviewPrep #globalThis #ExecutionContext #LinkedInLearning #TechSlides #GundlapudiExplains

🚀 React Day 2 — The Power of { Curly Braces } ⚛️ Unlike plain HTML (which just sits there), React lets your UI breathe with live data. ✨ In JSX, we use { curly braces } to bring JavaScript to life inside your markup. ✅ Display dynamic values — strings, numbers, and variables ✅ Make attributes flexible and data-driven ✅ Style elements using JS objects wrapped in braces 🧠 Think of it like this: HTML = static photo React JSX = live video with JS controlling every frame 🎥 #React #JavaScript #Frontend #WebDevelopment #LearnReact

A clean To-Do List is more than just a list! I just wrapped up this project, and the key challenge was handling the task reordering logic using pure React state array manipulation (no third-party drag-and-drop library!). The moveTaskUpside and moveTaskDownside functions specifically use array destructuring for an efficient swap: [arr[index-1], arr[index]] = [arr[index], arr[index-1]]. This helped reinforce concepts like immutability when updating state with setTasks. Tech Stack: React (useState) and CSS for the responsive, gradient-based UI. See it live: [Insert your Netlify Link here: https://lnkd.in/giuiwv-i] Let me know your thoughts on the approach! 👇 #ReactDevelopment #JavaScript #StateManagement #CodingProjects #Developer

Developer Tips & Insights 🔥 1. Stop Overusing useEffect in React! If you’re fetching data on mount, try React Query or custom hooks. Overusing useEffect = messy code and side effects. Think declaratively, not procedurally. 2. 🧪 Testing Tip: Don’t Test Implementation, Test Behavior Focus on what the user sees, not how your code is wired. Good: “Does the button show a loading spinner?” Bad: “Does it call setLoading(true)?” Build smarter, not harder! 🚀 Try more tools at [toolsonfire.com](https://toolsonfire.com) #React #WebDevelopment #DeveloperTips #Testing #Productivity #ToolsOnFire #JavaScript #Coding #Frontend #CleanCode #DevLife #LearnToCode #TechTips #CodeQuality #foryoupage #foryouシpage

🚀 React 19.2 just made forms feel… modern. One of the coolest new things is built-in form actions. Now you can handle form submissions without useState, useEffect, or tons of boilerplate. That means: ✅ less code ✅ fewer bugs ✅ cleaner async logic Here’s the vibe 👇 <form action={async (formData) => { const res = await fetch('/api/send', { method: 'POST', body: formData, }) }}> <input name="email" placeholder="Enter your email" /> <button type="submit">Subscribe</button> </form> That’s it — no state, no handlers, no custom hooks. React automatically handles submission, loading, and even errors — while keeping the UI responsive. In 2025, this feels like React finally catching up with how we actually build products — fast, declarative, and server-first. #React #Frontend #JavaScript #Nextjs #WebDevelopment #React19

Small details can make a huge difference. I once built a page where dropdown selections triggered API calls to fetch large datasets. Every change called the API, the usual approach. My lead suggested caching the results in state or Redux, reusing them on repeated selections. The result: faster load times, less strain, and a much better user experience. Optimization isn’t just about bundling. Memoization, lazy loading, and smart API handling matter even before the code ships. #FrontendDeveloper #React #JavaScript #WebPerformace

How does your browser sneak data off the web? It’s not magic, it’s the Fetch API. With just a few lines of JavaScript, you can request, send, or update data from any web service. We broke it down into simple, visual steps so you can: • See real-world example of fetching data from an API • Understand key concepts visually • Learn faster, perfect for beginners and curious developers Your quick-start guide to making HTTP requests in JavaScript is just a click away 👇 👉 Read the full guide on GreatFrontEnd https://lnkd.in/gkVNiRXS #JavaScript #WebDevelopment #FrontendDevelopment #greatfrontend

🚀 Mastering React Custom Hooks – Simplifying Reusable Logic! When working with React, we often find ourselves writing the same logic across multiple components — managing toggle states, fetching data, handling form inputs, etc. That’s where Custom Hooks come to the rescue! 💡 🔹 What are Custom Hooks in React? Custom hooks are reusable functions in React that let you extract and share stateful logic between components. They start with use (e.g., useOnlineStatus) They can use built-in hooks like useState, useEffect, useReducer, etc. They do not render UI — they return data or functions that components can use. 🔹 Why use Custom Hooks? Reusability – You can share logic across multiple components. Cleaner Components – Keeps your component code focused on UI, not logic. Separation of Concerns – Logic (like fetching data, online status, timers) lives in a hook, not in the component. #ReactJS #WebDevelopment #Frontend #JavaScript #CustomHooks #CodeReusability #CleanCode