JavaScript Prototype System Explained

🚀 Day 81 JavaScript OOP: What I Learned Recently Recently, I dived deeper into Object-Oriented Programming (OOP) in JavaScript, and honestly, it changed the way I look at writing code 👇 🔹 Prototypes (Core Concept) Before classes, JavaScript used prototypes for inheritance. Every object is internally linked to another object. Understanding this made everything else much clearer. 🔹 Factory Functions Functions that return objects. Very simple and beginner-friendly, but not memory efficient because each object stores its own copy of methods. 🔹 Constructor Functions & new Using the new keyword, we can create multiple objects efficiently. Methods are shared using prototypes, which saves memory. 🔹 Classes (Modern JavaScript) ES6 introduced classes, making code cleaner and easier to read. But the important thing is — classes are just syntactic sugar over prototypes. 🔹 Inheritance With extends and super(), we can reuse code and build scalable applications. This is where OOP becomes really powerful. 🔹 GET & POST Requests (Backend Basics) GET → used to fetch data (data visible in URL) POST → used to send data securely (data in request body) 💡 My Key Takeaways: ✔ JavaScript is flexible, not strictly OOP ✔ Understanding prototypes is more important than memorizing classes ✔ Writing structured code makes projects scalable and clean This journey helped me move from just writing code → to actually understanding how things work behind the scenes ⚡ Still learning, but getting better every day 🚀 #JavaScript #OOP #WebDevelopment #NodeJS #LearningJourney #Coding

🚀 Just published a new blog: 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗢𝗯𝗷𝗲𝗰𝘁-𝗢𝗿𝗶𝗲𝗻𝘁𝗲𝗱 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗶𝗻 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 If you’ve ever felt confused about classes, instances, `new` keyword, or how OOP actually works under the hood in JS — this one’s for you. I’ve broken it down step-by-step with practical examples, real-world analogies, and code snippets that actually make sense. Whether you’re a beginner trying to level up or an experienced dev looking for a solid refresher, I hope it helps clear things up! 🔗 Read it here: https://lnkd.in/gk4W-7_a Hitesh Choudhary Piyush Garg Akash Kadlag Suraj Kumar Jha Anirudh J. Chai Aur Code Jay Kadlag Nikhil Rathore Happy coding! 💻 #JavaScript #OOP #WebDevelopment #Programming #DeveloperCommunity #TechBlog

🔥 *A-Z JavaScript Roadmap for Beginners to Advanced* 📜⚡ *1. JavaScript Basics*   - Variables (var, let, const)   - Data types   - Operators (arithmetic, comparison, logical)   - Conditionals: if, else, switch  *2. Functions*   - Function declaration & expression   - Arrow functions   - Parameters & return values   - IIFE (Immediately Invoked Function Expressions)  *3. Arrays & Objects*   - Array methods (map, filter, reduce, find, forEach)   - Object properties & methods   - Nested structures   - Destructuring  *4. Loops & Iteration*   - for, while, do...while   - for...in & for...of   - break & continue  *5. Scope & Closures*   - Global vs local scope   - Block vs function scope   - Closure concept with examples  *6. DOM Manipulation*   - Selecting elements (getElementById, querySelector)   - Modifying content & styles   - Event listeners (click, submit, input)   - Creating/removing elements  *7. ES6+ Concepts*   - Template literals   - Spread & rest operators   - Default parameters   - Modules (import/export)   - Optional chaining, nullish coalescing  *8. Asynchronous JS*   - setTimeout, setInterval   - Promises   - Async/await   - Error handling with try/catch  *9. JavaScript in the Browser*   - Browser events   - Local storage/session storage   - Fetch API - Form validation  *10. Object-Oriented JS*   - Constructor functions   - Prototypes   - Classes & inheritance   - `this` keyword  *11. Functional Programming Concepts*   - Pure functions   - Higher-order functions   - Immutability   - Currying & composition  *12. Debugging & Tools*   - console.log, breakpoints   - Chrome DevTools   - Linting with ESLint   - Code formatting with Prettier  *13. Error Handling & Best Practices*   - Graceful fallbacks   - Defensive coding   - Writing clean & modular code  *14. Advanced Concepts*   - Event loop & call stack   - Hoisting   - Memory management   - Debounce & throttle   - Garbage collection  *15. JavaScript Framework Readiness*   - DOM mastery   - State management basics   - Component thinking   - Data flow understanding  *16. Build a Few Projects*   - Calculator   - Quiz app   - Weather app   - To-do list   - Typing speed test  🚀 *Top JavaScript Resources*   • MDN Web Docs   • JavaScript.info   • FreeCodeCamp   • Net Ninja (YT)   • CodeWithHarry (YT)   • Scrimba   • Eloquent JavaScript (book) 💬 *Tap ❤️ for more!* #webdeveloop #js

I just published my new technical blog! 🚀 This time, I wrote about Control Flow in JavaScript — covering if/else statements and switch cases, explained in a beginner-friendly way with examples and simple analogies. If you're on your JavaScript journey and want to understand how your code makes decisions, this one's for you! 📖 Read the article here: https://lnkd.in/gHZNjfBc Special thanks to Hitesh Choudhary and Piyush Garg for making these concepts so easy to grasp. Their teaching style always makes things click! 🙌 I'd really appreciate your feedback — drop a comment or a reaction if you find it helpful! 😊 #javascript #webdevelopment #programming #coding #beginners #chaicode #controlflow #learnjavascript

🚀 Day 5 / 100 — JavaScript Concepts That Every Developer Should Understand #100DaysOfCode Today I revised two very important JavaScript concepts that often come up in interviews and real-world debugging: 🔐 1. Closures A closure happens when a function remembers variables from its outer scope even after the outer function has finished executing. In simple words: A function carries its environment with it. Example: function outer() { let count = 0; function inner() { count++; console.log(count); } return inner; } const counter = outer(); counter(); // 1 counter(); // 2 counter(); // 3 Why this works: Even though outer() has finished running, inner() still remembers the variable count. 📌 Common use cases • Data privacy • Function factories • React hooks • Event handlers 🧠 2. Call Stack The call stack is how JavaScript keeps track of function execution. It works like a stack (Last In, First Out). Whenever a function runs: 1️⃣ It gets pushed onto the stack 2️⃣ When it finishes, it gets popped off Example: function one() { two(); } function two() { three(); } function three() { console.log("Hello from the call stack"); } one(); Execution order in the call stack: Call Stack three() two() one() global() Then it unwinds after execution. 📌 Understanding the call stack helps with: • Debugging errors • Understanding recursion • Avoiding stack overflow 💡 Key realization today: JavaScript is single-threaded, and concepts like closures + call stack explain a lot about how the language actually works behind the scenes. Mastering these fundamentals makes async JS, promises, and the event loop much easier later. 🔥 Day 5 completed. 95 days to go. If you're also learning to code, comment “100” and let’s stay consistent together 🤝 #javascript #100daysofcode #webdevelopment #coding #developers #programming #learninpublic #buildinpublic #SheryiansCodingSchool #Sheryians

🚀 Dive into the exciting world of asynchronous programming with JavaScript Promises! 🌟 Promises are a way to handle asynchronous operations in JavaScript, ensuring that a certain task is completed before moving on to the next one. Imagine ordering food online - you don't wait for the delivery before doing anything else, right? Promises work the same way! For developers, understanding Promises is crucial as it allows for smoother execution of tasks without blocking the main thread. This can lead to better performance and user experience in applications. 🔧 Here's a breakdown: 1. Create a new Promise using the "new Promise()" constructor. 2. Inside the Promise, define the asynchronous task (e.g., fetching data). 3. Use ".then()" to handle the successful outcome. 4. Use ".catch()" to handle errors. ``` const fetchData = new Promise((resolve, reject) => { // asynchronous task here resolve('Data fetched successfully!'); }); fetchData .then((data) => { console.log(data); }) .catch((error) => { console.log(error); }); ``` Pro Tip: Utilize async/await with Promises for even cleaner and more readable asynchronous code! 😊 Common Mistake Alert: Forgetting to handle errors with ".catch()" can result in uncaught Promise rejections. Always include error handling for robust code. 🤔 What will be your first project applying Promises to level up your development skills? Share your thoughts below! 🚀🌐 View my full portfolio and more dev resources at tharindunipun.lk #JavaScript #AsyncProgramming #Promises #WebDevelopment #CodingTips #AsyncAwait #DeveloperCommunity #CodeNewbie #FrontendDevelopment

🔥 Master the art of coding loops in JavaScript! 🚀 Loops are a fundamental concept in programming that allow you to execute a block of code multiple times. They are essential for automating repetitive tasks and iterating over data structures. For developers, understanding loops is crucial for writing efficient and concise code. Whether you're working on data manipulation, user interfaces, or backend logic, loops help you process large amounts of data with ease. Here's a step-by-step breakdown: 1️⃣ Initialize a counter variable 2️⃣ Set the condition for the loop to continue 3️⃣ Execute the code block inside the loop 4️⃣ Update the counter variable at the end of each iteration Check out the code example below: ``` for (let i = 0; i < 5; i++) { console.log('Hello, loop ' + i); } ``` Pro Tip: Use caution with infinite loops! Always ensure your loop has a clear exit condition to avoid crashing your program. Common Mistake Alert: Forgetting to update the counter variable in a loop can lead to infinite loops. Always remember to increment or decrement the counter inside the loop. 🌟 Question for you: What creative project are you currently working on with loops in your code? Share below! 💡 🌐 View my full portfolio and more dev resources at tharindunipun.lk #JavaScript #CodingLoops #ProgrammingBasics #DevTips #LoopMastery #CodeNewbie #TechTalk #DeveloperCommunity #DigitalSkills

🦎 reasons I always pick TypeScript over Javascript since I'm coding with AI agents, even for little demos, even for scripts: - yeah TypeScript has overhead. setup, compile step, types to write. but you're using agents to code, so you don't do any of that. the agent does it. so why do you care? - the agent can fix its own mistakes. it runs `tsc`, sees the error, corrects it. in JavaScript you either describe the error back manually, set up some MCP connection or test runner so the agent gets runtime feedback, or rely on test coverage to close the loop. all of that works, it's just more setup and you still need to actually hit the right code path to surface the bug. TypeScript catches it without running anything. - 4x fewer regressions in TypeScript projects (2-3% vs 8-12%, Builder.io 2026). 94% of LLM compilation errors are type-check failures, so the compiler is catching exactly the category of mistakes agents make most often - agents use fewer tokens on TypeScript codebases, in my experience, and the community seems to agree. the reason is pretty simple: a compiler error is precise ("line 42, wrong type") so the agent goes straight to the fix. a JavaScript runtime error requires re-reading context, guessing what caused it, trying again. more iterations, more tokens per bug - types give the agent a map. change an interface and it knows every call site that broke. in JavaScript it's guessing from variable names - even for one-off scripts I don't bother with JavaScript anymore. the debugging is just better. and I'm never sure a script won't grow, so I'd rather start right. my brain defaults to TypeScript now and I don't regret it.

🚀 Understanding OOP in JavaScript 🚀 Object-Oriented Programming (OOP) is a programming paradigm that helps us structure code using objects — making it more organized, reusable, and scalable. In JavaScript, OOP revolves around: Classes & Objects – Templates (classes) to create objects. Encapsulation – Keeping data safe inside objects. Inheritance – Reusing code by extending existing classes. Polymorphism – Methods behaving differently based on context. Abstraction – Hiding complex implementation details. Example: class Person { constructor(name, age) { this.name = name; this.age = age; } greet() { console.log(`Hello, I'm ${this.name}`); } } class Employee extends Person { constructor(name, age, role) { super(name, age); this.role = role; } greet() { console.log(`Hello, I'm ${this.name} and I work as a ${this.role}`); } } const emp = new Employee("Aditya", 24, "Developer"); emp.greet(); // Hello, I'm Aditya and I work as a Developer 💡 Why OOP in JS? Makes code modular and maintainable. Reduces redundancy through inheritance. Simplifies complex projects with abstraction and encapsulation. #JavaScript #OOP #Coding #WebDevelopment #LearnToCode

Just published a new blog post - 𝗔𝗿𝗿𝗼𝘄 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 𝗶𝗻 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁: 𝗔 𝗦𝗶𝗺𝗽𝗹𝗲𝗿 𝗪𝗮𝘆 𝘁𝗼 𝗪𝗿𝗶𝘁𝗲 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 In this article, I break down how arrow functions offer a cleaner, more concise syntax compared to traditional functions — perfect for writing modern, readable JavaScript code. Whether you're just starting out or looking to level up your skills, this one’s for you. Read the full post here: https://lnkd.in/gMWewVaM Huge thanks to the entire Chai Aur Code community and my mentors Hitesh Choudhary sir, Piyush Garg sir, Akash Kadlag sir, Anirudh J. sir for the continuous support and motivation! What’s your take — do you prefer arrow functions or regular function expressions? Drop your thoughts in the comments #JavaScript #WebDevelopment #Coding #ProgrammingTips #ChaiCode #DeveloperLife #TechBlog