Agbaje Abiodun’s Post

React wasn’t the problem. My fundamentals were. While working on a real-world project, I noticed a clear pattern. Most bugs and confusion didn’t come from advanced features. They came from skipping the basics. A few mistakes I corrected: • Using a state where simple props would do • Writing large components that were hard to maintain • Relying on frameworks without fully understanding React and JavaScript • Trying to optimize before identifying the real problem Once I focused on core fundamentals: • JavaScript basics • React data flow and component responsibility My code became cleaner, easier to debug, and more scalable. Frameworks help you move fast. Strong fundamentals help you build things that last. #ReactJS #FrontendDeveloper #SoftwareEngineering #WebDevelopment #LearningInPublic

Every React developer hits this moment 👇 At first, it’s all about learning hooks and libraries. Later, it becomes about understanding the “why”. Why state lives where it lives. Why re-renders happen. Why data flow matters more than tools. 💡 The real upgrade in React isn’t a new library — it’s clear thinking. When the “why” is clear, clean and scalable code follows naturally. #ReactJS #FrontendDevelopment #DeveloperJourney #CleanCode #JavaScript #ReactDeveloper

🔥 Scenario-Based Questions (Important for 2-3 YOE) Since you are working on real projects, expect questions like: How did TypeScript improve your React project? How do you type API responses? How do you handle dynamic data types? How do you type Redux state? How do you fix type errors in large projects? 🎯 Most Important Topics to Prepare ✔ Interfaces vs Types ✔ Generics ✔ Utility Types (Partial, Pick, Omit) ✔ Type Narrowing ✔ React with TypeScript ✔ API Response Typing ✔ Strict Mode #ReactJS #TypeScript #JavaScript #FrontendDeveloper #WebDevelopment #Coding #SoftwareEngineering #Interviewquestion

I Just learned React Hooks — and it changed how I think about React. 🙌 Here's what each Hook taught me 👇 **useState** A component can remember data. When data changes, UI updates automatically. No extra code needed. **useEffect** The right place to talk to the outside world — API calls, timers, event listeners. **useContext** Passing data through every component is messy. useContext is the cleaner way. **useRef** Store a value or grab a DOM element — without causing a re-render. Quietly powerful. The real lesson? Hooks aren't just syntax. They teach you **how to think** about your component. Still learning — but these 4 finally made React click for me. 💡 Which Hook took you the longest to understand? Drop it below 👇 #ReactJS #ReactHooks #JavaScript #FrontendDevelopment #LearningReact #100DaysOfCode #LearnToCode

🚀 7 Days of Better React – Day 2 Old Approach → Better Approach Faced a component recently that had too many nested conditions. ❌ Old approach: if (loading) { return <Loader />; } else { if (error) { return <Error />; } else { if (!data) { return <EmptyState />; } else { return <Dashboard data={data} />; } } } Hard to read. Hard to maintain. ✅ Better approach (Early Returns): if (loading) return <Loader />; if (error) return <Error />; if (!data) return <EmptyState />; return <Dashboard data={data} />; Cleaner logic. Easier to scale. Less mental overhead. Sometimes improving code isn’t about new libraries. It’s about simplifying flow. #reactjs #frontenddeveloper #cleanCode #javascript #webdevelopment

𝐄𝐯𝐞𝐧 𝐚𝐬 𝐚𝐧 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, 𝐈 𝐬𝐭𝐢𝐥𝐥 𝐬𝐨𝐦𝐞𝐭𝐢𝐦𝐞𝐬 𝐦𝐚𝐤𝐞 𝐬𝐢𝐦𝐩𝐥𝐞 𝐦𝐢𝐬𝐭𝐚𝐤𝐞𝐬. Today React threw: ❌ “Uncaught Error: input is a void element tag and must neither have children nor use dangerouslySetInnerHTML” I checked the code twice and didn’t notice it at first. I had written: <𝑖𝑛𝑝𝑢𝑡>  𝐸𝑛𝑡𝑒𝑟 𝑛𝑎𝑚𝑒 </𝑖𝑛𝑝𝑢𝑡> I wrote it almost automatically… and didn’t even realize. The issue? <input> is a void element in HTML. That means: 1️⃣ No children 2️⃣ No closing tag 3️⃣ Must be self-closing <𝑖𝑛𝑝𝑢𝑡 𝑡𝑦𝑝𝑒="𝑡𝑒𝑥𝑡" /> 💡 Reminder: Experience doesn’t mean you stop making mistakes. It means you understand them faster. Frameworks don’t replace fundamentals. They enforce them. #ReactJS #FrontendEngineering #LearningNeverStops #WebDevelopment

Stop writing "working" React code that’s actually a ticking time bomb. Most of us use the spread operator (...) daily. It’s the industry standard for immutability. But here’s the truth: The spread operator is misleading. It doesn’t create a fresh copy of your data; it only clones the "surface." If your React state has nested objects or arrays, you aren't updating state—you’re sharing references. This leads to the #1 cause of "ghost bugs" in React: components that refuse to re-render or data that changes when it shouldn't. I’ve put together a 10-slide "Deep Dive" PDF attached to this post to help you master these fundamentals. What’s the most "impossible to find" bug you’ve ever fixed? I’m betting it involved a reference issue. Let’s swap stories in the comments! #ReactJS #JavaScript #WebDevelopment #SoftwareEngineering #Frontend #CodingTips #TechLeadership

When working with bulk data from APIs in React, one of the most common beginner mistakes happens inside the .map() function. Recently, while rendering API data in the browser, I revisited an important concept: understanding the difference between the API response object and the individual items being mapped. Many developers try to access properties like: res.product.price inside a .map() loop, which often leads to errors. The reason is simple. Inside .map(), you are working with the current item in the array, not the entire API response. For example Jsx data.map((item, index) => ( <p key={index}>{item.product.price}</p> )) This works only if each object in the array actually contains a product object with a price field. The key lesson here is: Always inspect the API response structure before rendering Use console.log() to understand the shape of the data Access properties based on the current mapped item, not the full response Avoid guessing object paths without verification Small concepts like these prevent runtime errors and improve code clarity, especially when working with dynamic data in modern frameworks like React and Next.js. Learning never stops in web development. Even small debugging moments can turn into valuable lessons. #ReactJS #WebDevelopment #JavaScript #NextJS #FrontendDevelopment

Mastery starts with the basics! I’ve just wrapped up a hands-on practice session building a Todo App using React and TypeScript. While it might seem like a simple project, the core logic behind it is what fuels complex, real-world applications. During this build, I focused on: State Management: Leveraging useState for dynamic data flow. Immutability: Mastering the Spread Operator [...] to handle state updates efficiently. Array Manipulation: Using .map() for rendering and .filter() to handle precise deletion logic. Type Safety: Integrating TypeScript to ensure robust data handling and catch errors during development. What's next? The logic for creating and deleting is solid, and I’m currently working on implementing a seamless Edit system to complete the full CRUD cycle! I believe that mastering these small building blocks is essential before scaling to enterprise-level projects. The journey of a thousand miles begins with a single line of code. Stay consistent, stay curious! SourceCode:https://lnkd.in/g6VFC2D5 #ReactJS #TypeScript #WebDevelopment #CodingLife #FrontendDeveloper #LearningEveryday #NextJS #JavaScript #DeveloperCommunity #BuildingInPublic

🚀 Understanding POST API in React I recently implemented a POST API in React using the fetch() method. 🔹 Why do we use POST API? POST API is used when we need to send new data from the frontend to the backend, such as: Adding a new user Submitting a form Saving data into a database 🔹 What I implemented in this example: ✔ Used useState to manage user input ✔ Sent data to the backend using the POST method ✔ Converted JavaScript objects to JSON using JSON.stringify() ✔ Handled the API response with async/await ✔ Displayed success or error messages based on the response POST API mainly supports the Create operation in CRUD functionality. 📌 Backend endpoint: http://localhost:3000/user #ReactJS #PostAPI #FetchAPI #CRUD #JavaScript #FrontendDevelopment #WebDevelopment #Learning