Understanding setTimeout in JavaScript

🚀 Day 930 of #1000DaysOfCode ✨ setTimeout in JavaScript — More Than Just a Delay `setTimeout` looks simple on the surface — just delay something and move on. But behind it lies the core of how JavaScript handles asynchronous behavior. In today’s post, I’ve broken down how `setTimeout` actually works, how it interacts with the event loop, and why the execution order sometimes surprises developers. If you want to truly understand async JavaScript instead of memorizing behavior, this explanation will give you the clarity you need. 👇 Have you ever been confused by the output order when using `setTimeout`? #Day930 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #Next #CodingCommunity #AsyncJavaScript

✨ 𝗗𝗮𝘆 𝟭𝟳 𝗼𝗳 𝗠𝘆 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗝𝗼𝘂𝗿𝗻𝗲𝘆 🚀 Today I explored one of the most important concepts in JavaScript: the 𝗘𝘃𝗲𝗻𝘁 𝗟𝗼𝗼𝗽. I learned why 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗶𝘀 𝘀𝗶𝗻𝗴𝗹𝗲-𝘁𝗵𝗿𝗲𝗮𝗱𝗲𝗱 𝗮𝗻𝗱 𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀, yet still capable of handling asynchronous tasks efficiently. Key ideas I understood: 🔹 𝗦𝗶𝗻𝗴𝗹𝗲-𝘁𝗵𝗿𝗲𝗮𝗱𝗲𝗱 𝗻𝗮𝘁𝘂𝗿𝗲 – JavaScript runs one task at a time on a single call stack. 🔹 𝗦𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀 𝗲𝘅𝗲𝗰𝘂𝘁𝗶𝗼𝗻 – code runs line by line by default. 🔹 𝗘𝘃𝗲𝗻𝘁 𝗟𝗼𝗼𝗽 – manages asynchronous operations by coordinating the 𝗖𝗮𝗹𝗹 𝗦𝘁𝗮𝗰𝗸, 𝗪𝗲𝗯 𝗔𝗣𝗜𝘀, 𝗮𝗻𝗱 𝗖𝗮𝗹𝗹𝗯𝗮𝗰𝗸 𝗤𝘂𝗲𝘂𝗲. This concept finally helped me understand how JavaScript handles things like 𝘁𝗶𝗺𝗲𝗿𝘀, 𝗲𝘃𝗲𝗻𝘁𝘀, 𝗮𝗻𝗱 𝗮𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀 𝗼𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻𝘀 without blocking the main thread. #JavaScript #100DaysOfCode #WebDevelopment #LearningJourney #FrontendDevelopment #EventLoop

JavaScript is a single-threaded language, which means it executes one task at a time using the call stack. But it can still handle asynchronous tasks like API calls, timers, and promises. This happens because of the Event Loop. The Event Loop continuously checks if the call stack is empty. When it is empty, it takes tasks from the callback queue and moves them to the stack to be executed. Because of this system, JavaScript can run asynchronous operations without blocking the main thread, which makes web applications faster and more responsive. Learning the Event Loop helped me understand how JavaScript manages asynchronous code behind the scenes. #JavaScript #Coding #EventLoop #async

Day 20 of #30DaysOfTech 🚀 Today’s focus: Async/Await in JavaScript. Yesterday I explored Promises and how they work with the microtask queue in the event loop. Today I learned that async/await is essentially a cleaner way to work with promises. Instead of chaining multiple .then() calls, async/await allows asynchronous code to look and read like synchronous code. The result: - Cleaner logic - Easier debugging - More readable backend code Under the hood it’s still Promises, but the syntax makes complex asynchronous workflows much easier to manage. Slowly understanding how JavaScript handles real-world backend operations. One concept at a time. #LearningWithTS #JavaScript #AsyncAwait #BackendDevelopment

🚀 Day 912 of #1000DaysOfCode ✨ Prototype-Based Inheritance in JavaScript JavaScript doesn’t use classical inheritance like many other languages — it follows a prototype-based inheritance model. In today’s post, I’ve explained how prototype-based inheritance works in JavaScript in a simple and structured way. You’ll understand how objects are linked, how properties are shared, and how the prototype chain actually behaves behind the scenes. If you’ve ever been confused about `__proto__`, `prototype`, or how inheritance really works in JS, this post will help you build strong conceptual clarity. 👇 Did prototype inheritance confuse you when you first learned JavaScript? #Day912 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #Next #CodingCommunity #Prototype

Just wrapped up learning Chai Code Promises in JavaScript — and explained them in the most fun way possible 😄 Instead of boring theory, I used a DJ at a party example to understand async behaviour: People request songs, the DJ promises to play them, and with async/await he waits for one track to finish before starting the next. Simple, real, and memorable. This approach really helped me connect JavaScript concepts with real-life situations — and that’s when things start to click 💡 : Please criticise to the point of perfection Hitesh Choudhary Piyush Garg Anirudh Jwala Akash Kadlag Jay Kadlag Suraj Kumar Jha #JavaScript #WebDevelopment #AsyncAwait #Promises #LearningInPublic #CodingJourney https://lnkd.in/gjy5sjt8

🚀 JavaScript Fundamentals Series — Part 8 Objects are one of the most important concepts in JavaScript. Almost everything in JavaScript is built around objects. This guide covers: • What objects really are • Properties and methods • How JavaScript structures data • Why objects are everywhere in JS If you want to truly understand JavaScript, you must understand objects. Full guide 👇 https://lnkd.in/dGHh7weZ #javascript #coding #webdev

🚀 Day 6 of #30DaysOfJavaScript Today I built a Random Password Generator using JavaScript. This project generates a secure random password and also allows users to copy it easily. 🔹 Features ✔ Generate random strong password ✔ Copy password to clipboard ✔ Clean and simple UI 🛠 Tech Used HTML CSS JavaScript 🔗 Live Demo: https://lnkd.in/gvMGMfgr 🔗 GitHub Repository: https://lnkd.in/gxigBsYp I’m improving my JavaScript skills by building projects every day. More projects coming soon 🚀 #javascript #webdevelopment #frontenddevelopment #coding #100daysofcode

Async/Await helps us handle asynchronous tasks in JavaScript in a simple and clean way. It makes the code easier to read and understand compared to other methods. It is commonly used when working with APIs and data fetching in web applications. Learning this concept helped me understand how JavaScript manages tasks that take time to complete. #JavaScript #webdevelopment #Coding

🚀 JavaScript Hoisting – Explained in Easy Way! Day4 Today I revised one of the most confusing but important JavaScript concepts — Hoisting. Many developers get confused between var, let, const, and function hoisting. Here’s the simple understanding 👇 ✅ JavaScript runs in 2 phases: 1️⃣ Memory Creation Phase 2️⃣ Code Execution Phase 🔹 var → Hoisted as undefined 🔹 let / const → Hoisted but in Temporal Dead Zone (TDZ) 🔹 Function Declaration → Fully hoisted and ready to use Understanding hoisting helps avoid common bugs and improves interview confidence 💪 Keep learning. Keep building. 🔥 #JavaScript #WebDevelopment #FrontendDevelopment #Day4 #SoftwareDeveloper