Understanding Async JavaScript: Callbacks, Promises, Async/Await

👉✅ “Setting a one-week goal to revise JavaScript again.” 💻Topic-1. JavaScript Constructor Function Hey everyone, 👋 Today, let’s talk about an interesting JavaScript topic — the Constructor Function. This is a special type of function that helps us create multiple similar objects without writing the same code again and again! 🔁 🧠 Key points to understand: The name of a constructor function always starts with a capital letter. We use the new keyword when creating an object. It automatically returns a new object. Through this concept, we can explore the basics of Object-Oriented Programming (OOP) in JavaScript — including concepts like inheritance and encapsulation. 🚀 If you’re learning JavaScript, understanding constructor functions is a must-have skill — it makes your code cleaner, reusable, and more efficient! #JavaScript #WebDevelopment #CodingTips #ConstructorFunction #FrontendDevelopment #LearningEveryday

Prototypes JavaScript is an object-oriented language built around a prototype model. In JavaScript, every object inherits properties from its prototype, if there are any. A prototype is simply an object from which another object inherits properties. To create complex programs using JavaScript, one has to be proficient in working with prototypes — they form the very core of OOP in the language.

JavaScript or TypeScript — which one should you really learn first? Here’s the simple roadmap no one explains clearly 👇 🧭 Step 1 – Learn JavaScript first. Understand the core: variables, functions, objects, arrays, and async logic. Without this, TypeScript will feel like a wall. ⚙️ Step 2 – Feel the pain. After building a few projects, you’ll notice JS doesn’t warn you about errors until it’s too late. That’s where TypeScript shines. 💡 Step 3 – Move to TypeScript. It adds types to your JS — making your code more predictable, scalable, and easier to debug. 📈 When to use each: Use JavaScript for quick prototypes or small scripts. Use TypeScript for large, long-term projects, especially with teams. Mastering both will make you unstoppable in modern development. 👉 Which one are you using right now — JS or TS? #JavaScript #TypeScript #Programming #CareerGrowth #WebDevelopment

❓ Are “undefined” and “not defined” the same in JavaScript? Not really. In JavaScript, every declared variable automatically gets the placeholder undefined during the memory allocation phase — meaning the variable exists, but no value has been assigned yet. However, if you try to access a variable that was never declared, JavaScript throws not defined. ➡️ Undefined = declared but not assigned ➡️ Not Defined = not declared at all JavaScript is also a loosely typed language, so variables can change types freely. 💡 Pro tip: Never manually assign undefined. Let JavaScript handle that. #JavaScript #WebDevelopment #Programming #Frontend #LearningJS

Keywords in JavaScript - JavaScript Tutorial 09 🚀 ► https://lnkd.in/gJPYxAec ► In this tutorial, we dive into JavaScript keywords, explaining their use in defining variables, control flow, and more. Learn how to use them effectively to write clean, functional JavaScript code. JavaScript Tutorials Playlist:  ► https://lnkd.in/getnwV5e #javascript #coding #programming #webdevelopment #learnjavascript #webdeveloper #coder #code #html #css

💡 JavaScript Tip: Dynamic Property Names Did you know you can create object keys dynamically in JavaScript? This trick is especially useful when key names come from user input, API data, or variables. 🧠 Instead of writing static keys, wrap your variable in [] inside an object literal — JavaScript will use the variable’s value as the property name. 🎯 Use cases: Building dynamic JSON objects Handling forms where field names are not known ahead of time Generating API payloads dynamically Small detail, big flexibility 💪 #JavaScript #WebDevelopment #CodingTips #NodeJS #Programming

🚀𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗠𝗲𝘁𝗵𝗼𝗱𝘀 𝗬𝗼𝘂 𝗠𝘂𝘀𝘁 𝗞𝗻𝗼𝘄 𝗮𝘀 𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 JavaScript methods are the building blocks that make coding efficient and powerful. From working with strings and arrays to handling objects, these methods simplify our daily development tasks. Some must-know JS methods include: 📌 map(), filter(), reduce() for arrays 📌 toUpperCase(), slice(), replace() for strings 📌 Object.keys(), Object.values() for objects Understanding these methods will help you write cleaner, faster, and smarter code. #JavaScript #WebDevelopment #FrontendDevelopment #JavaScriptConcepts #JavaScriptDeveloper #LearnJavaScript #Coding #Programming #FrontendDeveloper

𝐀𝐥𝐥 𝐚𝐛𝐨𝐮𝐭 𝐡𝐨𝐰 𝐄𝐯𝐞𝐧𝐭 𝐋𝐨𝐨𝐩 𝐰𝐨𝐫𝐤𝐬 𝐢𝐧𝐭𝐞𝐫𝐧𝐚𝐥𝐥𝐲 𝐈𝐧 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 !! Understanding how JavaScript’s event loop works, especially with async/await, is a game changer for any developer. JavaScript doesn’t just run code line by line when async functions are involved. Instead, it uses something called the event loop, which manages different queues to decide what runs when. There are Microtasks (like promises and await) and Macrotasks (like setTimeout), and Microtasks always get priority. This means even when you use await, JavaScript pauses only inside that function but continues running other code outside it. That’s why sometimes console logs appear in unexpected orders! Grasping this helps you write better asynchronous code, avoid tricky bugs, and build smoother apps. Keep digging into these concepts — it’s worth it! In this post, I’m sharing everything you need to know about JavaScript’s event loop — explained in simple words. To make it even easier, I’ve created a set of slides that break down the concept step-by-step. Follow Gourav Roy for more such amazing content !! 𝐂𝐨𝐧𝐧𝐞𝐜𝐭 𝐨𝐧 𝐓𝐨𝐩𝐦𝐚𝐭𝐞 - https://lnkd.in/gyGxA7ut 𝐂𝐨𝐧𝐧𝐞𝐜𝐭 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦 - https://lnkd.in/djMF2k3Q #JavaScript #EventLoop #AsyncAwait #WebDevelopment #CodingTips #Java

Keywords in JavaScript - JavaScript Tutorial 09 🚀 ► https://lnkd.in/ggh6CJ5Q ► In this tutorial, we dive into JavaScript keywords, explaining their use in defining variables, control flow, and more. Learn how to use them effectively to write clean, functional JavaScript code. JavaScript Tutorials Playlist:  ► https://lnkd.in/g-TAmZZ3 #javascript #coding #programming #webdevelopment #learnjavascript #webdeveloper #coder #code #html #css

🚀 JavaScript Practice: Prime Numbers from 1 to 100 Here's a simple yet classic logic-building problem — finding all prime numbers between 1 and 100 using JavaScript. Key learnings from this program: ✅ Nested loops usage ✅ Logical thinking with condition checks ✅ Introduction to algorithmic problem-solving 💡 Tech Used: JavaScript 👨💻 Concept: Prime Number Detection #JavaScript #Coding #100DaysOfCode #SoftwareEngineer #LearningInPublic #LogicBuilding #FrontendDevelopment