#Custom Hooks

Just created a React project and feeling confused by the folders? 👀 Let’s simplify the default React folder structure. When you create a fresh React app, you’ll see: 📁 node_modules — Installed packages (don’t edit) 📁 public — Static files like index.html 📁 src — Your main application code Inside src: 📄 main.jsx / index.js — App starting point 📄 App.jsx — Main component 📄 App.css — Component styles Everything you build starts from here. As your project grows, then you create folders like components or pages. Strong fundamentals start with understanding the basics. 💬 Did the React folder structure confuse you at first? Comment YES or CLEAR 👇 📌 Save this for beginners 👥 Follow for simple frontend learning

✅ Step 1: Create an Axios instance ✅ Cleaner API calls ✅ Better scalable React apps Save this for later 💾 Follow @techtoolboxhq for daily React + MERN stack tips ⚡ #reactjs #codingtips #javascript #webdevelopment #frontenddeveloper

Want to write React like a professional from day one? Comment "React" and I'll send you the full lesson plus a components architecture guide that accelerates everything 🚀 One file does everything. That's the problem. Look at your App.js right now. State declarations at the top. Functions in the middle. JSX with headings, inputs, buttons, and lists all crammed together. It works. Nobody's denying that. But scroll through it. It's getting long. Every feature you add makes it longer. Every bug fix means hunting through more lines. In real applications this becomes unmanageable. Files with 500 lines. 1000 lines. Developers scared to touch anything because everything is tangled together. That's not how professionals build apps. The solution: components. Think of components like LEGO bricks. Your app is the final model. Each brick does one specific job. Header brick. Input brick. TodoItem brick. List brick. You assemble them together to create the whole thing. Need to change the header? Touch only the header brick. Other pieces stay untouched. Swap one brick without rebuilding the entire model. We're going to extract the todo item into its own component. That entire li element with the text, the toggle functionality, the delete button, the styling. All of it moves into a separate file called TodoItem. Self-contained. Focused on one job. Reusable anywhere you need it. But how does a component get data? It lives in a separate file. It can't see your state. It can't see your functions. That's where props come in. Properties. Like arguments to a function. The parent component passes data down. The child component receives it and uses it. TodoItem needs the todo text, the index, the toggle function, the delete function. All passed as props. Data flows down from parent to child. One direction. Clean. Predictable. This is how React is meant to be written. Small focused pieces that snap together. This reel is just the trailer. Full lesson 👉 www.projectschool.dev

Want to improve your React app performance? In this short video, you’ll learn: • How to prevent unnecessary re-renders • When to use React.memo • Why useCallback and useMemo matter • How code splitting improves load time • Why production builds are important These simple optimization techniques can make your React applications faster and more efficient. Follow for more React tips, frontend tutorials, and web development content. #ReactJS #WebDevelopment #Frontend #JavaScript #Programming #Shorts

Add parentheses here. Watch your app explode. Infinite loop. Frozen screen. Total chaos. This is the mistake every React beginner makes. And understanding why it happens is the key to understanding onClick. onClick is the click version of onChange. Same concept, different trigger. onChange watches for typing. onClick watches for clicking. User clicks the button? onClick catches that moment and runs whatever function you give it. The syntax is simple. On your button element, add onClick equals curly braces with your function name inside. That's it. Button connected. Function ready to run. But here's where beginners destroy their apps. You write the function name WITHOUT parentheses. Just addTodo. Not addTodo(). This is crucial. Without parentheses, you're saying "here's the function, hold onto it, call it later when someone clicks." React takes the function and waits patiently for a click event. With parentheses, you're saying "call this function RIGHT NOW." The function runs immediately when the component renders. If that function updates state, the component re-renders. Which runs the function again. Which updates state again. Which re-renders again. Infinite loop. App crashes. Browser freezes. Chaos. One pair of parentheses. That's the difference between a working app and a disaster. So you add onClick with addTodo, no parentheses. Save the file. Open the browser. Type something in the input. "Buy milk". Click the add button. Watch the input field. It cleared! The text disappeared. That means setTodo ran. The function worked. The button is officially employed. Doing its job. But wait. The list below still shows nothing new. Or maybe old hardcoded items. The todos aren't appearing. Why? Because the list isn't reading from state yet. Your addTodo function is correctly pushing items into the todos array. But your ul element doesn't know about that array. It's not connected. Still showing static content instead of dynamic data. We need to make the list actually read from state. Display real todos. Dynamic rendering. Comment "React" — I'll DM you the full roadmap 🚀 This reel is just the trailer. Full lesson 👉 www.projectschool.dev

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🚨 If you’re learning React and don’t know these Hooks… you’re already behind. Most beginners try to memorize tutorials. But real **React developers understand the core hooks that power almost every modern React app. ⚡ The hooks every developer must know: • useState → manage component state • useEffect → handle API calls & side effects • useContext → access global data • useRef → work with DOM elements • useMemo / useCallback → performance optimization • useReducer → complex state management 💡 Pro tip: If you master these hooks, you can understand 80% of React projects. 📌 Save this post so you always have the React Hooks cheat sheet. Follow for more simple coding breakdowns 🚀 #reactjs #javascriptdeveloper #webdevelopment #codingtips #learncoding

Comment "React" and I'll send you the full lesson for this reel plus a guide on immutability in React 🚀 Your state updates. Screen doesn't. You add a todo. Nothing appears. You check the console. Data is there. But the UI refuses to change. What is happening? Welcome to the most common React mistake. Mutating state directly. Every beginner hits this wall. Let's break it down so you never suffer from it. Here's what some beginners try. Instead of using setTodos properly, they write todos.push() with the new item. Looks logical. Push adds to arrays. That's JavaScript basics. But in React? This silently breaks everything. Here's why. React needs to know when to re-render your component. It figures this out by comparing old state to new state. Different? Re-render. Same? Do nothing. When you use push, you're modifying the existing array. Same array. Same reference in memory. React compares the old reference to the new reference. They're identical. Same object. React concludes nothing changed. Skips the re-render. Your UI stays frozen while your data silently updates underneath. Invisible bug. Maddening to debug. The fix: always create a new array. Never touch the original. That's why the spread operator exists. Three dots followed by the array name copies all items into a brand new array. Add your new item at the end. Pass this fresh array to setTodos. React compares references. Old array versus new array. Different objects. Different references. React notices the change. Triggers a re-render. UI updates. Everything works. Golden rule for React state: never modify, always create new. Arrays? Spread them into new arrays. Objects? Spread them into new objects. Strings and numbers are primitives, they're fine to replace directly. But arrays and objects must always be copied first. Burn this into your brain. Push is forbidden. Spread is your friend. This reel is just the trailer. Full lesson 👉 www.projectschool.dev

Calling your API on every keypress? 😬 Use debounce to: ✅ Reduce API calls ✅ Improve performance ✅ Save server load You'll need this in your next project 💾 Follow @techtoolboxhq for daily React tips ⚡ #reactjs #javascript #codingtips #frontenddeveloper #webdevelopment

Avoid these React anti-patterns to write cleaner, faster & scalable React apps. Save this post for interview prep & best practices! Like & Follow for more React & JS concepts #smarttechieshub #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment

🚀 How React Websites Load So Fast ⚡ Ever wondered why some React websites feel instant… while others take forever? It’s not just hosting. It’s not just internet speed. It’s how the app is built. In this short video, I break down: ✔ Code Splitting ✔ Lazy Loading ✔ Memoization ✔ API Caching ✔ Image Optimization If you’re learning React in 2026, performance is what separates beginners from pros. ⚡ Fast apps = Better UX ⚡ Better UX = More users ⚡ More users = More money Comment FAST if you want my React performance checklist. Fallow for daily AI + React tips. #react #reactjs #webdevelopment #frontend #coding #javascript #aidev #programming #developers #techshorts

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