Learn ReactJS Hooks State Management and Best Practices

🚀 Day 10 of My #React Learning Journey – Introduction to #ReactHooks Today I started learning about React Hooks, one of the most powerful features in modern React development. 🧠 What are Hooks? Hooks are special functions introduced in React v16.8 (2019) that allow developers to use React features like state, lifecycle methods, and context without writing class components. In simple terms, Hooks let us “hook into” React functionality inside functional components. 🔑 Commonly Used React Hooks 🔹 #useState Used to add and manage state in a functional component. 🔹 #useEffect Used to handle side effects, similar to lifecycle methods like componentDidMount. 🔹 #useContext Used to access global data from React Context without passing props manually. 🔹 #useRef Used to access DOM elements or store mutable values that persist across renders. 🔹 #useMemo & #useCallback Used for performance optimization by preventing unnecessary calculations or re-renders. 🔹 #useReducer Used for managing complex state logic, especially in large applications. 💡 Why Hooks are important? ✔ Write cleaner and simpler code ✔ Use state and lifecycle features in functional components ✔ Improve code reuse and performance React Hooks completely changed how modern React applications are built. Excited to dive deeper into hooks like useState and useEffect in the next steps of my React journey! 💻✨ #React #JavaScript #ReactHooks #FrontendDevelopment #WebDevelopment #LearningJourney #10000 Coders

🚀 Today’s Learning: React Component Life Cycle Methods Today I explored the Component Life Cycle in React (Class Components) and understood how a component behaves from creation to removal. 🔹 React components go through 3 main phases: 📌 1. Mounting Phase (Component is created & added to the DOM) - "constructor()" - "render()" - "componentDidMount()" 📌 2. Updating Phase (When state or props change) - "render()" - "componentDidUpdate()" 📌 3. Unmounting Phase (Component is removed from the DOM) - "componentWillUnmount()" 💡 What I understood clearly: - "constructor()" → Initialize state - "render()" → Returns JSX (UI) - "componentDidMount()" → Perfect place for API calls - "componentDidUpdate()" → Reacts to state/prop changes - "componentWillUnmount()" → Cleanup (timers, subscriptions) Understanding the lifecycle helps in: ✅ Writing cleaner code ✅ Managing state properly ✅ Handling side effects correctly ✅ Avoiding memory leaks Every small concept builds strong foundations in Full Stack Development. #ReactJS #WebDevelopment #FrontendDevelopment #LearningJourney #FullStackDeveloper #100DaysOfCode

🚀 Day 2 of My TypeScript Journey! Today was packed with learning — here's everything I covered: 📌 03 - Functions ✅ Function types & return types ✅ Optional parameters (?) ✅ Default parameters ✅ Arrow functions ✅ Rest parameters (...args) ✅ Function overloading 📌 04 - Async/Await ✅ What is a Promise? ✅ resolve & reject ✅ .then() & .catch() ✅ async/await syntax ✅ try/catch error handling ✅ Promise.all() — run multiple async tasks together 💡 Key Takeaways: 1️⃣ Always define return types in functions   → makes code predictable & safe 2️⃣ Use optional (?) for params that may not exist   → great for API responses 3️⃣ async/await is just cleaner Promise syntax   → same thing, easier to read 4️⃣ Always wrap await in try/catch   → never let errors crash your app 5️⃣ Promise.all() saves time   → runs multiple calls together instead of one by one 🔥 Tips & Tricks: → void = function returns nothing → never use any[] in rest params if you can avoid it → Promise<T> — always specify what type will return → async function always returns a Promise — even if you don't write it 📂 All code on GitHub: https://lnkd.in/dPRGnVsx Day 3 tomorrow — Generics! 💪 #TypeScript #100DaysOfCode #WebDevelopment #JavaScript #NodeJS #Pakistan #Developer #Coding #OpenToWork #NextJS #NestJS

🚀 Day 15 of My #React Learning Journey – #Functional vs #Class #Components Today I explored the difference between Functional Components and Class Components in React. 🧠 #FunctionalComponents ✔ Simple JavaScript functions that return JSX ✔ No render() method required ✔ Use React Hooks for state & lifecycle ✔ Less code, easier to read and maintain ✔ Preferred in modern React development 🧠 #ClassComponents ✔ Must extend React.Component ✔ Requires a render() method ✔ Uses this.state for state management ✔ Lifecycle methods like componentDidMount() ✔ More boilerplate and complex structure ⚡ Key Differences 🔹 State Management Functional → useState (Hooks) Class → this.state 🔹 Lifecycle Handling Functional → useEffect Class → lifecycle methods 🔹 Code Complexity Functional → Simple & clean Class → More complex 🔹 Performance & Usage Functional → More efficient & widely used today Class → Older approach (still useful but less common) 💡 My Takeaway: Functional components with Hooks have become the standard way of building React applications due to their simplicity and flexibility. Excited to keep learning and building more with React! 💻✨ #React #JavaScript #FrontendDevelopment #WebDevelopment #ReactJS #LearningJourney #10000 Coders

A successful project doesn't start with a single line of code. ☕ It starts with a conversation. Before I touch Django or React, I spend time understanding the "Why" behind the "What." When I sat down to plan the Global Company Info Tool, the goal wasn't just "gathering data" it was making that data visual and actionable on a map. My 3-step process before I start a sprint: Identify the Pain Point: What is the one thing that keeps the user frustrated? Define the MVP: What is the simplest way to solve it without "bloat"? Map the Logic: Ensuring the backend is ready for 1,000 users, not just 10. Coding is the easy part. Building a solution that actually fits a business's workflow is where the real work happens. Founders: How much time do you spend in the "discovery" phase before your team starts building? Check out my portfolio 👉 https://lnkd.in/dXRyuGqX #SoftwareEngineering #ProjectPlanning #FullStackDev #UIUX #Django #ReactJS

Generics in TypeScript confused me at first. 🤯 But once I understood this one idea, everything clicked. 👉 Generics let you write reusable, type-safe code without using any. Before learning Generics, I used to write things like: function getFirst(arr: any[]) { return arr[0]; } It works… But TypeScript can’t protect you. Now I write: function getFirst<T>(arr: T[]): T { return arr[0]; } What changed? 👇 ✅ If I pass number[] → it returns number ✅ If I pass string[] → it returns string ✅ If I pass User[] → it returns User One function. Multiple types. Fully safe. That’s when I realized: Generics aren’t “advanced magic.” They’re just placeholders for types. Instead of hardcoding a type, you say: “I’ll decide the type later.” And that’s powerful. 💡 This week I’m experimenting with using Generics in API calls and reusable React components. Frontend devs here — When did Generics finally make sense to you? 👇 #TypeScript #FrontendDevelopment #JavaScript #WebDevelopment #ReactJS #SoftwareEngineering #LearningInPublic

Yesterday, I officially started learning TypeScript. A few weeks ago, I shared the React projects I have been building and what I have learned so far. I felt comfortable with React. Components, hooks, props, state, project structure. Everything was beginning to make sense. Then a colleague asked me, “Have you learned TypeScript?” I replied, “What is TypeScript?” He said, “DYOR.” I asked what that meant. He said, “In tech, we research. We do not wait to be spoon fed. If I explain everything to you, you might not take it seriously.” That moment stayed with me. So I went back, opened my laptop, and started researching. I began learning from W3Schools and other documentation. That was when I discovered that TypeScript is JavaScript with added syntax for types. A syntactic superset of JavaScript that introduces static typing. And honestly, that changed my perspective. So far, I have learned: • Why we use TypeScript instead of plain JavaScript • How TypeScript helps detect errors before runtime • The TypeScript compiler • Basic and special types • Arrays, tuples, and object typing What I realized is this: React made me comfortable. TypeScript is making me disciplined. JavaScript lets you write code. TypeScript forces you to think before you write it. And that is the level I want to reach as a developer. Not just building things that work, but building things that scale, that are maintainable, and that other engineers can trust. Today, I continue learning. Growth in tech is not about knowing everything. It is about being willing to say, “I do not know this yet,” and then doing something about it. We research. We build. We improve. If you are ahead of me in TypeScript, I am open to learning from you. If you are just starting, let us grow together. #TypeScript #React #WebDevelopment #FrontendDeveloper #LearningInPublic #BuildInPublic

Most developers struggle with NestJS not because it’s complex… but because the core concepts are explained in a way that feels complicated. So I tried a different approach. I created a visual explanation of NestJS fundamentals as if a 5-year-old is learning them. Because once you simplify the four core pieces, the framework suddenly makes sense: 🪄 Decorators → Magic labels that tell NestJS what something does 🧹 Pipes → Clean and transform incoming data 🧰 Services → The place where the real work happens 🎮 Controllers → The traffic manager handling requests and responses When you understand how these pieces work together, NestJS stops feeling like a “new framework” and starts feeling like a well-organized system for building backend applications. I paired this explanation with simple code examples so beginners can connect the concept with real implementation. Sometimes the best way to learn complex systems is to explain them in the simplest possible way. If this kind of visual + simplified explanation helps you understand backend concepts: 👉 Like so more developers see it 👉 Share it with someone learning NestJS 👉 Comment the next concept you want explained this way #nestjs #nodejs #backenddevelopment #typescript #softwaredevelopment #webdevelopment #programming #developers #coding

Ever felt like TypeScript's basic types just aren't cutting it? 🤔 You're not alone. Let's dive into advanced types that can take your type safety to the next level. 🚀 I was recently working on a project where I needed to ensure that certain functions could only accept specific types of objects. The basic types just weren't giving me the granularity I needed. I started exploring advanced types and was amazed at the level of control they offered. 💡 It was like discovering a whole new world of type safety. I implemented these advanced types and immediately saw a reduction in runtime errors and a significant improvement in code maintainability. 🛠️ Advanced TypeScript types like Conditional Types, Mapped Types, and Utility Types can help you create highly specific and reusable type definitions. Conditional Types allow you to create types that depend on conditions. Mapped Types let you create new types by iterating over the properties of an existing type. Utility Types provide a set of pre-defined types that can help you manipulate and transform existing types. By combining these advanced types, you can create highly precise and flexible type definitions that can adapt to the needs of your application. 🔧 💡 Key Takeaway: Advanced TypeScript types can significantly enhance your code's type safety and maintainability. By leveraging Conditional Types, Mapped Types, and Utility Types, you can create highly specific and reusable type definitions that adapt to your application's needs. 🔍 Have you used advanced TypeScript types in your projects? What was your experience like? Let's discuss in the comments! 💬 #Frontend #WebDev #JavaScript #Coding #Programming #TypeScript

🚀React Learning Series | Day 7 – Event Handling in React ->Event handling in React allows applications to respond to user actions such as clicks, typing, and form submissions. ->React events work similarly to JavaScript events but follow camelCase naming and use functions as event handlers. Common events include: --onClick --onChange --onSubmit --onMouseOver Example: function ButtonClick() { function handleClick() { alert("Button Clicked!"); } return <button onClick={handleClick}>Click Me</button>; } Explanation: --onClick triggers the function when the button is clicked --React updates the UI or performs actions based on user interaction Why Event Handling is Important: ✔ Builds interactive user interfaces ✔ Connects user actions with application logic ✔ Essential for forms and dynamic UI behavior --->Event handling is a key concept that makes React applications interactive and user-friendly. 📌 Day 7 of my React Learning Series #ReactJS #ReactDeveloper #FrontendDevelopment #WebDevelopment #JavaScript #CodingJourney #DeveloperJourney #LearningInPublic #BuildInPublic #TechLearning #LinkedInSeries 🚀