JavaScript OOP: Prototype-Based vs Class-Based

- One JavaScript Concept That Made Sense to Me For a while now, I had been using `var`, `let`, and `const`… without fully grasping the distinction between them. It seemed fine – until it wasn’t. Here’s what finally made sense 👇 👉 **Scope and immutability trump syntax** Here’s my approach: • `const` is the default • `let` is used for reassignment • `var` is never used Why? Because predictable code means less debugging. For instance: Using `const` guarantees variables don’t get altered unpredictably, making debugging and maintaining code much simpler. This little tweak helped me: ✔️ Create better code ✔️ Eliminate accidental bugs ✔️ Code more clearly Great JS developers don’t just code; they know how it works under the hood. 💬 What’s one JavaScript concept that you struggled with initially, but it eventually changed your coding practice? #JavaScript #Frontend #WebDevelopment #JSBasics #CleanCode #CodeQuality #Programming #SoftwareEngineering #CodingTips #DeveloperExperience #LearnInPublic #BuildInPublic #JSDeveloper #FrontendDev #BestPractices #CodeBetter #JavaScript #FrontendDevelopment #WebDevelopment #JSBasics #CleanCode #CodeQuality #Programming #SoftwareEngineering #CodingTips #DeveloperJourney #LearnInPublic #BuildInPublic #JSDeveloper #FrontendDev #BestPractices #CodeBetter

Spread and Rest in JavaScript use the same ... syntax but behave differently. • Spread expands values • Rest collects values In this blog, I’ve explained both with clear examples using arrays, objects, and practical use cases 👇 https://lnkd.in/g3p4YVH4 #javascript #webdevelopment #frontend #coding #programming #learninpublic

Scope vs Closure in JavaScript — Explained Simply Understanding the difference between Scope and Closure is crucial for writing clean and efficient JavaScript code. While Scope defines where variables are accessible, Closure allows functions to remember their lexical environment even after execution. This concept is widely used in: • Data encapsulation • Function factories • Callbacks & async programming If you’ve ever been confused between these two, this guide will help you clear it with practical examples. 👉 Read the full article: https://lnkd.in/ga8WaNiA #JavaScript #FrontendDevelopment #WebDevelopment #Programming #Coding #SoftwareDevelopment #LearnJavaScript #InterviewPrep

Understanding the Event Loop in JavaScript is a turning point for every developer. Many developers use async features like promises, setTimeout, or async/await daily — but very few truly understand what happens behind the scenes. I’ve written a detailed yet easy-to-understand article that breaks down: ✔ Call Stack ✔ Callback Queue ✔ Microtask Queue ✔ Execution Order If you want to strengthen your JavaScript fundamentals and avoid common async mistakes, this will definitely help. 👉 Read the full article: https://lnkd.in/gDhwvmUc I’d love to hear your thoughts — what was the hardest concept for you when learning the Event Loop? #JavaScript #SoftwareDevelopment #WebDevelopment #FrontendDevelopment #AsyncProgramming #Coding #TechLearning

🧠 JavaScript Myth Busting: "Let and Const are not Hoisted" (Yes, they are!) Have you ever been told in an interview that "let" and "const" aren’t hoisted, but "var" is? It’s one of the most common misconceptions in JavaScript. 👉 Here is the 100% technical truth: All declarations in JavaScript ("var", "let", "const", "function", "class") are hoisted. So, why do they behave differently? It’s all about Initialization and a friendly little neighborhood called the Temporal Dead Zone (TDZ). --- 🚨 The Difference: 1️⃣ "var" is hoisted AND initialized immediately with the value of "undefined". You can access it before its line of code without crashing. 2️⃣ "let" and "const" are hoisted BUT NOT initialized. The JavaScript engine knows they exist, but it reserves the memory without setting any starting value. --- 💀 Enter the Temporal Dead Zone (TDZ): The TDZ is the period of time between the start of a block and the moment the variable is actually initialized (the line where you wrote the declaration in your code). If you try to touch a "let" or "const" variable while it is trapped in the TDZ, JavaScript throws a ReferenceError. --- 💡 Why does this matter? The TDZ exists to enforce better coding practices. It helps prevent bugs by stopping you from using variables that have been created but aren't yet ready for use. --- 📌 Check out the image below for a simple breakdown! 👇 💬 Drop your best analogies in the comments! #javascript #coding #webdevelopment #programmingmyths #softwareengineering #learncoding #frontend

🚀 JavaScript Variables & Functions Understanding how variables and functions work is key to writing efficient JavaScript code. 📌 Variable Keywords: 🔹 var → Can be redeclared & reassigned 🔹 let → Cannot be redeclared, but can be reassigned 🔹 const → Cannot be redeclared or reassigned 📌 Functions in JavaScript: 🔹 Built-in Functions → alert(), prompt(), parseInt() 🔹 User-defined Functions → Custom logic as per requirement 📌 Types of User Functions: ✔ No argument, no return ✔ With argument, no return ✔ With argument & return value 💡 Why Functions? Code reusability Cleaner & shorter code 👉 Mastering these basics builds a strong JavaScript foundation. #JavaScript #WebDevelopment #Frontend #Coding #Developers #Programming

Just wrote a blog on the "new" keyword in JS Under the hood, new follows a precise process: • Creates a new empty object • Links it to the constructor’s prototype • Binds this to that object • Executes the constructor function • Returns the final instance If you're learning JavaScript or revisiting fundamentals, this will sharpen your understanding 👇 https://lnkd.in/gEitS7KJ #JavaScript #WebDevelopment #Frontend #Programming #Coding #LearnInPublic #Developers #SoftwareEngineering

Wrote a new blog on Destructuring in JavaScript. One of those features that seems small at first, but has a huge impact on code quality. Covering: • What destructuring actually means • Array vs object destructuring • Default values (and why they matter) • Before vs after comparisons • Writing cleaner, more readable code https://lnkd.in/g2y6rmnt Hitesh Choudhary Chai Aur Code Piyush Garg Akash Kadlag Jay Kadlag Nikhil Rathore #javascript #webdevelopment #frontend #coding #programming #developers #learninpublic #100daysofcode

One small word in JavaScript causes a lot of confusion: undefined. Many developers encounter it but don’t fully understand why it appears. In my latest article, I break it down in a practical way: • What undefined actually means • Common scenarios where it shows up • Mistakes developers often make • How to avoid it in real projects This is especially useful if you're learning JavaScript or improving your debugging skills. 🔗 Read the full article: https://lnkd.in/gaGDuAHp Curious — what was the most confusing JavaScript concept for you when you started? #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #SoftwareDevelopment #Debugging #LearnJavaScript

🚀 **Understanding JavaScript Variables Like a Pro (var vs let vs const)** If you're working with JavaScript, choosing the right keyword — `var`, `let`, or `const` — is more important than you think. Here’s a simple breakdown 👇 🔸 **var** * Function scoped * Can be re-declared * Can be re-assigned * Hoisted with `undefined` 👉 Mostly avoided in modern JavaScript due to unexpected behavior. --- 🔹 **let** * Block scoped * Cannot be re-declared in same scope * Can be re-assigned * Hoisted but in Temporal Dead Zone (TDZ) 👉 Best for variables that will change. --- 🔒 **const** * Block scoped * Cannot be re-declared * Cannot be re-assigned * Must be initialized at declaration 👉 Best for constants and safer code. --- 💡 **Pro Tip:** Always prefer `const` by default → use `let` when needed → avoid `var`. --- 📊 The attached diagram explains: * Scope hierarchy (Global → Function → Block) * Memory behavior * Key differences visually --- 🔥 Mastering these fundamentals helps you: ✔ Write cleaner code ✔ Avoid bugs ✔ Crack interviews easily --- #JavaScript #WebDevelopment #Frontend #Coding #Programming #Developers #LearnToCode #Tech #SoftwareEngineering #NodeJs #Json