Time Limit Async Function in JavaScript

Day 19/30 – Build Promise.all from Scratch ⚡ | Parallel Async Execution in JavaScript Challenge 💻🚀 🧠 Problem: Given an array of async functions (each returns a promise), execute them in parallel and: ✅ Resolve when all promises resolve ❌ Reject immediately if any promise rejects ⚠️ Important: Maintain the original order of results Do NOT use Promise.all() ✨ What this challenge teaches: Parallel promise execution Tracking completion state Handling early rejection Managing result ordering This is how: ⚡ API batching works ⚡ Microservices handle parallel calls ⚡ High-performance systems combine async results Understanding this makes you strong in: Async architecture Promise coordination Interview-level JavaScript 💬 Where have you used parallel async calls in your projects? #JavaScript #30DaysOfJavaScript #CodingChallenge #AsyncJavaScript #Promises #PromiseAll #JSLogic #WebDevelopment #LearnToCode #CodeEveryday #DeveloperJourney #Programming #TechCommunity Implement Promise.all JavaScript Parallel async execution JS JavaScript promise handling Async concurrency JavaScript LeetCode JavaScript solution JS interview preparation Advanced JavaScript concepts Daily coding challenge

💡 JavaScript Concept: Promises — Handling Async Like a Pro Callbacks were messy. Promises made async code cleaner. 👉 A Promise represents a value that may be available now, later, or never. 🔹 States of a Promise 🟡 Pending 🟢 Fulfilled 🔴 Rejected 🔹 Example fetch("https://lnkd.in/dCvdkSsB") .then(response => response.json()) .then(data => console.log(data)) .catch(error => console.error(error)); Promises improve: ✔ Readability ✔ Error handling ✔ Async flow control Async programming without Promises is like coding blindfolded 😅 #JavaScript #Promises #AsyncProgramming #Frontend

🚀 Understanding Higher-Order Functions in JavaScript In JavaScript, functions are treated as first-class citizens, which means they can be passed as arguments, returned from other functions, and assigned to variables. This powerful feature leads to the concept of Higher-Order Functions. 👉 A Higher-Order Function is a function that either: ✔️ Takes another function as an argument, or ✔️ Returns a function as its result ✔️ This makes code more flexible, reusable, and expressive. 💡 Why Higher-Order Functions matter: ✔️ Promote code reusability ✔️ Help write cleaner and more modular code ✔️ Enable functional programming patterns 👉 You may already be using higher-order functions in JavaScript without realizing it. Methods like map(), filter(), and reduce() are common examples. In simple terms, Higher-Order Functions allow functions to work with other functions, making JavaScript more powerful and flexible. #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #SoftwareDevelopment #Developers #LearnJavaScript #FunctionalProgramming #CodingJourney

Just published a new blog on Array Methods in JavaScript. In this article, I explained: • push() and pop() • shift() and unshift() • map() • filter() • reduce() (simple explanation) • forEach() If you're learning JavaScript, mastering these methods will immediately improve your code quality and readability 👇 https://lnkd.in/gsd7cyU4 Hitesh Choudhary Chai Aur Code Piyush Garg Akash Kadlag Jay Kadlag #JavaScript #WebDevelopment #FrontendDevelopment #LearnInPublic #CodingJourney #100DaysOfCode #WebDev #Programming

📌 JavaScript Deep Dive: Understanding how 'this' behaves in different scenarios The 'this' keyword in JavaScript doesn’t behave the same way in every situation — its value depends on how a function is invoked, not where it is defined. Key scenarios: • Global context → 'this' refers to the global object (or undefined in strict mode) • Object method → 'this' refers to the calling object • Regular function call → depends on invocation context • Arrow functions → lexically inherit 'this' from surrounding scope • Constructor functions (new) → 'this' refers to the new instance • call(), apply(), bind() → allow explicit control of 'this' Understanding 'this' is essential for writing predictable, maintainable, and scalable JavaScript applications. #JavaScript #Frontend #WebDevelopment #Programming #SoftwareEngineering

🔐 Understanding encodeURIComponent() and decodeURIComponent() in JavaScript When working with URLs in JavaScript, handling special characters properly is essential. That’s where encodeURIComponent() and decodeURIComponent() come in. ✅ encodeURIComponent() : This function encodes a URI component by converting special characters into a format that can be safely transmitted in a 👉 Why this matters: 🔹 Spaces become %20 🔹 & becomes %26 🔹 Special characters won’t break query strings ✅ decodeURIComponent() : This function reverses the encoding and converts it back to its original format. 🎯 When Should You Use Them? ✔ Passing user input in query parameters ✔ Handling special characters safely ✔ Preventing malformed URLs ✔ Working with APIs Proper URL encoding ensures reliability, security, and clean data transmission between client and server. #JavaScript #WebDevelopment #FrontendDevelopment #Programming #CleanCode #TechTips

JavaScript has one of the most famous quirks in programming: 👉 typeof null === "object" Yes… really. But why? Back in the early implementation of JavaScript (1995), values were stored in memory using type tags. Objects had a type tag of 0. Unfortunately, null was represented as a null pointer (0x00). When typeof checked the type tag, it saw 0 and returned "object". That bug shipped. And because fixing it would break massive amounts of existing code, it stayed. So what’s the real issue? Because of this: typeof null === "object" You cannot safely check for objects like this: typeof value !== "object" Why? Because null is not an object - but JavaScript says it is. The correct way to check: if (value !== null && typeof value === "object") { // safe object check } Or more explicitly: if (value && typeof value === "object") (when you’re okay excluding null and other falsy values) This is one of those historical decisions that shaped JavaScript forever. It’s not a feature. It’s a legacy artifact. And knowing it separates beginners from engineers who understand the language deeply. Akash Kadlag Hitesh Choudhary Jay Kadlag Chai Aur Code #JavaScript #WebDevelopment #Programming #LearningInPublic

🚨 JavaScript Logic Challenge What’s the Output? Think you’ve mastered core JavaScript? Let’s test your fundamentals 👇 Code: let x = "20"; let y = 5; console.log(x + y); 💬 What will be the output? (a) 25 (b) 205 (c) "100" (d) Error This looks simple… but it tests your understanding of: ✅ Type Coercion ✅ Data Types ✅ String vs Number operations ✅ The + operator behavior in JavaScript Many developers get this wrong because they forget how JavaScript handles implicit conversion. 👇 Drop your answer in the comments (a, b, c, or d) 🔥 Tag your coding buddy 📌 Save this post if you love JS challenges Let’s see who really understands JavaScript fundamentals. #JavaScript #WebDevelopment #FrontendDeveloper #CodingChallenge #LearnToCode #100DaysOfCode #JS #Programming #DeveloperCommunity #TechCareers #reels #explore #viral #coding #fyp

🚀 Callback Functions in JavaScript A callback function is a function that is passed as an argument to another function and executed later after a specific task is completed. Callbacks are important in JavaScript because many operations are asynchronous, such as API requests, timers, and event handling. 💡 Example function greet(name, callback) {  console.log("Hello " + name);  callback(); } function sayBye() {  console.log("Goodbye!"); } greet("Amar", sayBye); In this example, sayBye is the callback function that runs after the greet function executes. 📌 Common use cases • Event listeners • API requests • setTimeout and setInterval • Array methods like map, filter, and forEach Callbacks play a fundamental role in handling asynchronous behavior in JavaScript. #JavaScript #WebDevelopment #Programming #FrontendDevelopment #Coding

🚀 Day92 of JavaScript Practice – String Manipulation & Array Methods Today I focused on improving my JavaScript problem-solving skills by practicing string manipulation and powerful array methods like map(), filter(), and reduce(). 🔹 String Manipulation Practice Reversing a string Counting vowels in a string Converting strings to uppercase/lowercase Finding duplicate characters 🔹 Array Method Practice ✅ map() – Transforming array values const numbers = [1,2,3,4]; const squares = numbers.map(num => num * num); console.log(squares); // [1,4,9,16] ✅ filter() – Filtering elements based on conditions const numbers = [10,15,20,25,30]; const even = numbers.filter(num => num % 2 === 0); console.log(even); // [10,20,30] ✅ reduce() – Reducing array to a single value const numbers = [1,2,3,4]; const sum = numbers.reduce((acc, curr) => acc + curr, 0); console.log(sum); // 10 💡 These methods make JavaScript code cleaner, more readable, and powerful for data manipulation. Consistent coding practice helps strengthen logic building and real-world problem solving. #CCBP #NxtWave #JavaScript