Mastering Fetch API for Frontend Development

So you wanna be a frontend master. It all starts with the Fetch API - and trust me, it's a game-changer. You gotta know how to use it, or you're stuck in the dark ages of web development. Here's the lowdown: with Fetch, you can send all sorts of requests - GET, POST, PUT, PATCH, DELETE, you name it. And then there's handling JSON responses, which is a breeze once you get the hang of it. Oh, and let's not forget URLSearchParams - it's like a superpower for filtering data. You can even create reusable requests, which saves you a ton of time in the long run. And when things go wrong, you can abort requests with AbortController - it's like having a panic button, but in a good way. Check this out: you can practice all these skills with a free fake API - https://lnkd.in/dSqzAn4Q. It's like a playground for frontend devs. For example, you can create a user with a POST request, or fetch users with related data using URLSearchParams. You can even update data with PUT and PATCH requests, or delete a user with a DELETE request. And with new Request(), you can create reusable requests that make your life easier. Plus, AbortController lets you abort requests when you need to - it's like a safety net. So why are these skills so important? Well, they're useful for all sorts of things - like signup forms, admin dashboards, filtering and pagination, updating profile info... You can even use them to cancel search requests or stop downloads - it's like having total control over your web app. And the best part? You can learn all this and more with the Fetch API. Source: https://lnkd.in/gQNM3CGG #FrontendDevelopment #JavaScript #FetchAPI

🛑 Stop Re-rendering! Mastering React Performance Optimization ⚡⚛️ One of the most common performance killers in React apps is 𝐮𝐧𝐧𝐞𝐜𝐞𝐬𝐬𝐚𝐫𝐲 𝐫𝐞-𝐫𝐞𝐧𝐝𝐞𝐫𝐬. If a parent component updates, its children usually re-render too—even if their data hasn't changed at all. This is where 𝐏𝐮𝐫𝐞 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬 come in. 1️⃣𝐓𝐡𝐞 𝐂𝐨𝐧𝐜𝐞𝐩𝐭 (𝐂𝐥𝐚𝐬𝐬 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬) 🏛️ • In the old days, we extended `React.PureComponent` instead of `React.Component`. • It automatically implemented `shouldComponentUpdate` with a 𝐬𝐡𝐚𝐥𝐥𝐨𝐰 𝐜𝐨𝐦𝐩𝐚𝐫𝐢𝐬𝐨𝐧 of props and state. • 𝑅𝑒𝑠𝑢𝑙𝑡: If data looks the same, the render is skipped. 2️⃣𝐓𝐡𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧 (𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐚𝐥 𝐂𝐨𝐦𝐩𝐨𝐧𝐞𝐧𝐭𝐬) 🚀 • Since we mostly use functions now, we have `React.memo`. • It is a Higher-Order Component (HOC) that wraps your function. • `const OptimizedComponent = React.memo(MyComponent);` • 𝑅𝑒𝑠𝑢𝑙𝑡: Same behavior! It memoizes the result and only re-renders if props change. ⚠️ 𝐓𝐡𝐞 "𝐒𝐡𝐚𝐥𝐥𝐨𝐰" 𝐓𝐫𝐚𝐩: Remember, both methods use 𝐬𝐡𝐚𝐥𝐥𝐨𝐰 𝐜𝐨𝐦𝐩𝐚𝐫𝐢𝐬𝐨𝐧. If you pass a 𝑛𝑒𝑤 object or function reference (like an inline arrow function `onClick={() => {}}`) from the parent, React will think the props changed every time, breaking your optimization. 𝐏𝐫𝐨 𝐓𝐢𝐩: Always pair `React.memo` with `useCallback` for functions to make it actually work! Check out the visual comparison below! 👇 Do you wrap everything in `React.memo` by default, or only when you see performance issues? #ReactJS #WebPerformance #FrontendDevelopment #JavaScript #CodingTips #SoftwareEngineering

React Hooks are special functions that allow functional components to use state, lifecycle features, context, refs, and performance optimizations without using class components. 1️⃣ State Hooks Purpose: Manage component data that changes over time. Hooks: useState, useReducer 2️⃣ Context Hooks Purpose: Access global/shared data without passing props manually through multiple levels. Hook: useContext 3️⃣ Ref Hooks Purpose: Access DOM elements or store mutable values without triggering re-rendering. Hooks: useRef, useImperativeHandle 4️⃣ Effect Hooks Purpose: Handle side effects such as API calls, subscriptions, timers, and DOM synchronization. Hooks: useEffect, useLayoutEffect, useInsertionEffect, useEffectEvent 5️⃣ Performance Hooks Purpose: Improve performance by preventing unnecessary re-renders and caching expensive calculations. Hooks: useMemo, useCallback, useTransition, useDeferredValue 6️⃣ Other Hooks Purpose: Provide specialized features such as debugging, unique IDs, managing action state, and subscribing to external stores. Hooks: useDebugValue, useId, useSyncExternalStore, useActionState 7️⃣ Custom Hooks Purpose: Reuse component logic across multiple components by creating developer-defined hooks (e.g., useAuth, useFetch). Understanding the purpose of each Hook category helps developers build scalable, maintainable, and high-performance React applications. #ReactJS #ReactHooks #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #Developers

React is cool… but Ember is disciplined 😤🔥 I explored Ember.js recently, and now I understand why many enterprise teams still trust it for long-term products. Here’s what makes Ember stand out: 🔥 Clean architecture & strong conventions 🔥 Built-in routing + structured app setup 🔥 Predictable upgrades (stability without breaking changes) 🔥 Ember CLI is insanely productive 🔥 No “which library should I pick?” headache I wrote a complete Ember.js guide with only docs + text references (no videos). If you have time for a quick coffee ☕, check it out: 👉 Blog link: https://lnkd.in/g5h__9zG #EmberJS #JavaScript #Frontend #WebDevelopment #ReactJS #NextJS #SoftwareEngineering #Developer

𝐀𝐛𝐨𝐫𝐭𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫 𝐢𝐧 𝐑𝐞𝐚𝐜𝐭: 𝐀 𝐌𝐮𝐬𝐭-𝐊𝐧𝐨𝐰 : When we call an API in React (inside use-Effect), the request can sometimes take time. 𝐁𝐮𝐭 𝐰𝐡𝐚𝐭 𝐢𝐟 𝐭𝐡𝐞 𝐮𝐬𝐞𝐫: leaves the page, switches to another screen, or the component disappears. The API request may still be running in the background. 𝐓𝐡𝐢𝐬 𝐜𝐚𝐧 𝐜𝐚𝐮𝐬𝐞: bugs, unexpected UI behavior, wasted network calls 𝐓𝐡𝐚𝐭’𝐬 𝐰𝐡𝐞𝐫𝐞 𝐀𝐛𝐨𝐫𝐭𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫 𝐡𝐞𝐥𝐩𝐬: 𝐖𝐡𝐲 𝐀𝐛𝐨𝐫𝐭𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫 𝐢𝐬 𝐢𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭,𝐖𝐡𝐞𝐧 𝐲𝐨𝐮 𝐜𝐚𝐧𝐜𝐞𝐥 𝐚 𝐫𝐞𝐪𝐮𝐞𝐬𝐭: 1). Prevents updating state after unmount 2). Avoids unnecessary network usage 3). Avoids race conditions (old request overriding new response) 𝐈𝐦𝐩𝐨𝐫𝐭𝐚𝐧𝐭 𝐍𝐨𝐭𝐞: Imagine your backend endpoint:  /𝗮𝗽𝗶/𝘂𝘀𝗲𝗿𝘀 It takes 10 seconds to fetch users and process logic React calls the API But user closes the tab after 2 seconds 𝐘𝐨𝐮 𝐜𝐚𝐥𝐥 𝐀𝐛𝐨𝐫𝐭𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫: React cancels the request immediately, No UI update will happen. But backend may still continue processing unless backend handles cancellation (client disconnect). 📌 In the next post, I’ll show how to handle aborted requests in Node/Express backend, detect when the client disconnects, and stop unnecessary processing. #ReactJS #JavaScript #Node #Express #Frontend #Backend #WebDevelopment #ReactHooks #CodingTips #AbortController

Form Validations in Web Applications is one of the most important and much needed features. In case of React.js Form Validation is performed using ways like custom logic or using third-party libraries. The React Hook Form is on of such libraries that offers high performance validation for React.js forms along with its integration with Zod. I have published an article on "Use 'react-hook-form' and 'zod' for implementing the Form" on the following link: https://lnkd.in/dxJ35E9A Please go through it. #MVPBuzz #mvpbuzz #reactjs #webapps Vikram Pendse ヴィクラム ペンセ Suprotim Agarwal Sachin Nimbalkar Sachin Shukre Deepak Purandare Deepali Kamatkar Deepti Bhawarthi shilpa hardas Sagar Joshi

🚀 A React hook most developers ignore (but shouldn’t): useSyncExternalStore If you’ve ever: Subscribed to localStorage, WebSockets, or custom event emitters Seen weird re-render bugs in Concurrent React Built your own global store logic 👉 useSyncExternalStore is the correct way to do it in modern React. Why this matters Before React 18, subscriptions could break under concurrent rendering. This hook guarantees consistent state, even during interruptions and transitions. Example: subscribing to localStorage import { useSyncExternalStore } from "react"; function subscribe(callback) { window.addEventListener("storage", callback); return () => window.removeEventListener("storage", callback); } function getSnapshot() { return localStorage.getItem("theme"); } export function useTheme() { return useSyncExternalStore(subscribe, getSnapshot); } ✅ Concurrent-safe ✅ No tearing ✅ Official React solution When to use it Custom state managers Cross-tab sync External data sources outside React Replacing fragile useEffect + useState patterns 💡 If you’re building libraries or advanced apps, this hook is a must-know. Most React devs never learn this — until it saves them from a production bug. #React #JavaScript #WebDevelopment #Frontend #ReactHooks #SoftwareEngineering

Day 1 of my backend development journey! Yesterday, I officially started my back-end web development course, beginning with Node.js and using the AdonisJS framework. The first topic we covered was routing, the foundation of how web applications handle requests. I discovered that a route essentially comprises a URL pattern and a handler function. In AdonisJS, all routes must be defined in the start/routes.ts file. *Here are key takeaways from the lesson: 1 Route parameters: Allow dynamic values in URLs (e.g. /users/:id to capture a user ID). 2 Optional parameters: Use '?' to make parts of the URL optional (e.g. /users/:id?). 3.Wildcard parameters: Capture everything after a certain point with '*'. 4.Parameter matchers: Use custom constraints to allow only certain characters (e.g. allow only numbers with .where('id', /^[0-9]+$/) ). There are also built-in matchers for common patterns, such as ':id' (numbers). Seeing how requests flow from the browser to the server was an exciting introduction to the world of backend development – it felt like unlocking a new layer! I'm super motivated for what's coming next: controllers, middleware, databases and more. If you're also learning Node.js, AdonisJS, or back-end development in general, leave a comment below – let's connect and share our progress! 👇 #BackendDevelopment #NodeJS #AdonisJS #WebDevelopment #JavaScript #TechJourney #FrontendDeveloper #LearningToCode #WomenInTech

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

React 19 introduces a significant enhancement by making <script> tags a first-class citizen. No longer do we need to rely on useEffect to load external scripts. Traditionally, when integrating tools like Google Analytics, Stripe, or Maps widgets, we would manually append a <script> tag to the document body, which often felt like a workaround. The previous approach required extensive DOM manipulation code and raised concerns about race conditions, such as the possibility of loading the script multiple times if a component mounted more than once. With the modern approach, you can simply render the <script> tag directly within your component alongside your JSX. React takes care of the complexities, including: • Hoisting: It positions the script correctly in the document. • Deduplication: If multiple components render the same script tag, React ensures it only loads once. This change allows for better organization of dependencies, as components can now declare their own script requirements without needing global setups in _document.js. Additionally, this functionality extends to <link rel="stylesheet"> tags as well. . . . . #React19 #JavaScript #WebDevelopment #Frontend #ReactJS #JSX #ModernWeb #DevTips