How to add two promises in JavaScript using Promise.all()

Day 15 of #30DaysOfJavaScript on LeetCode Today's Challenge: 2725 — Interval Cancellation This problem focused on mastering repeated asynchronous execution in JavaScript — specifically, how to repeatedly run a function using setInterval() and stop it with clearInterval(). Here’s my solution 👇 var cancellable = function(fn, args, t) { fn(...args); let timer = setInterval(() => fn(...args), t); let cancelFn = () => clearInterval(timer); return cancelFn; }; This exercise helped me understand how interval-based scheduling works and how to control execution flow by canceling ongoing intervals a common pattern in real-world applications like periodic data fetching or live updates. Try it out here: https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #AsyncAwait #Promises #30DaysOfCode #Programming #Developers #LearningJourney

🚀 Callback Hell in JavaScript: The “Pyramid of Doom”! In JavaScript, Callback Hell happens when multiple asynchronous functions are nested inside each other, creating deeply indented code that’s hard to read, debug, and maintain. 😩 ✅ How to avoid it: Use Promises to flatten nested callbacks Use async/await for clean, readable code Modularize your logic into smaller functions #JavaScript #WebDevelopment #CallbackHell #AsyncAwait #Promises #CodingTips #FrontendDevelopment #WebDevelopers #CleanCode #Programming #LearnToCode #CodeSmarter #DeveloperCommunity

Day 13 of #30DaysOfJavaScript on LeetCode Today's Challenge: 2621 — Sleep Today’s challenge explored the basics of asynchronous timing in JavaScript — creating a custom sleep() function that pauses execution for a given duration using promises. Here’s my solution 👇 async function sleep(millis) { return new Promise(resolve => setTimeout(resolve, millis)); } This simple problem reinforces how promises and setTimeout() work together to handle delays asynchronously. Understanding this helps build a solid foundation for mastering async behavior in JavaScript. Try it out here: https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #LearningJourney #30DaysOfCode #AsyncAwait #Promises #Programming #Developers #Learning

⚡ Functions in JavaScript — Less Typing, More Flexing 😎 Today I finally learned functions, and wow… they make coding so much easier! Functions are basically your personal minions 🫡 You define them once — and they do the job every time you call them! Here’s what I learned 👇 🔹 Functions make your code clean and reusable 🔹 They accept parameters to work flexibly 🔹 And help you avoid writing the same logic again and again 🙌 It’s crazy how powerful something so simple can be. One function call — and boom 💥 — everything just works! Next up → Arrow functions 🏹 Let’s see how they make things even shorter and smarter. #JavaScript #WebDevelopment #Frontend #CodingJourney #Functions #LearningInPublic #DeveloperLife #Programming #CleanCode #100DaysOfCode

⚡ Master JavaScript Concepts — From Basics to Advanced! 💡 Level up your coding skills by mastering the core concepts of JavaScript — the language that powers the web! 🌐 📘 Key Topics Covered: Variables, Scopes & Closures Promises & Async/Await Event Loop & Callbacks Prototypes & Inheritance ES6+ Features & Best Practices 🚀 Strengthen your foundation and code smarter with confidence! 👉 Follow Pluto Academy for more JavaScript guides, cheat sheets & interview resources. #JavaScript #WebDevelopment #Frontend #CodingInterview #Programming #PlutoAcademy

Just published a beginner-friendly guide to understanding function binding in JavaScript! If you've ever wondered why `this` becomes undefined in callbacks, this article breaks it down with simple examples. Perfect for developers learning JavaScript or anyone who needs a refresher on bind() 💻 https://lnkd.in/dmAU3Rhc #JavaScript #WebDevelopment #Programming #Coding

Day 6 of #30DaysOfJavaScript: Unlocking the Power of Array Reduction by Building My Own! 🚀 Today’s challenge took me under the hood of one of JavaScript’s most versatile methods—the .reduce() function. Instead of relying on the built-in version, I crafted a custom reducer that processes an array sequentially to accumulate a final result from an initial value. Here’s a glimpse of the solution I created: What stood out today: The elegance of breaking down complex operations into simpler, reusable steps using higher-order functions. Deepened my understanding of how accumulator patterns work in JavaScript and other programming languages. A fresh appreciation for common built-in functions that hide these powerful mechanics behind simple calls. This hands-on experience is a big step forward in mastering JavaScript fundamentals and improving my problem-solving skills. Looking forward to sharing more coding adventures and growing with this community! If you’re also on this journey, feel free to connect and exchange insights. #JavaScript #CodeNewbie #WebDevelopment #LeetCode #AlgorithmPractice #Programming #ContinuousLearning

JavaScript Quirks Every Developer Should Know Understanding these "funny" behaviors isn't just entertaining it's essential for writing better code: - - Why [] == ![] is true (type coercion) - Why 0.1 + 0.2 ≠ 0.3 (floating-point precision) - Why sort() doesn't work as expected (alphabetical default) These quirks teach us valuable lessons about JavaScript's underlying mechanics. What JS behavior caught YOU off guard when you first started? Share your stories! #JavaScript #WebDevelopment #TechEducation #LearnToCode #Programming

Day 26 – Understanding Scope, Closure & Higher-Order Functions in JavaScript Today I learned about three powerful concepts in JavaScript: Scope, Closure, and Higher-Order Functions. These concepts helped me understand how data access and function behavior actually work behind the scenes. The lecture was deeply insightful and covered ideas that are rarely explained this clearly. Thanks to Rohit Negi for the guidance. #coderArmy #JavaScript #WebDevelopment #Frontend #LearningInPublic #Programming #tech #coding #GrowthJourney

𝐒𝐭𝐚𝐫𝐭𝐢𝐧𝐠 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭? 𝐇𝐞𝐫𝐞’𝐬 𝐖𝐡𝐚𝐭 𝐀𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐌𝐚𝐭𝐭𝐞𝐫𝐬 Many beginners get stuck choosing between frameworks, tools, and languages before writing their first line of code. The truth is, none of that matters as much as building consistency. If you’re just starting out: Pick one language (JavaScript is a great choice). Build something small every day a button, a form, a layout. Don’t chase perfection; chase understanding. Everyone starts from zero. The developers you admire today were once Googling “how to center a div.” Keep going. The only difference between a beginner and a pro is persistence. #WebDevelopment #Programming #LearningToCode #DevZapz