JavaScript Sparse Arrays: Avoid Unexpected Behavior

Using <div> for buttons. Just stop. 🛑 When you use a <div> as a button, you're creating extra work for yourself and a nightmare for keyboard users. <button>: Handles focus, "Enter" key, and screen readers automatically. <div>: Requires JS hacks just to make it usable. The Tip: Let the browser do the heavy lifting. Use semantic elements and get 80% of your #a11y for free. 🛠️ #webdev #frontend #javascript #coding #accessibility

Still using JavaScript arrays the same way you always have? Modern array methods can make everyday tasks simpler and your code easier to read. This covers practical tips to help you: • Replace values cleanly • Reset arrays without workarounds • Convert arrays into objects • Sum values efficiently • Find the last occurrence of elements Small improvements like these add up quickly in real projects. Which array method do you rely on most? [Check the Link in the Comment! 🔗] #JavaScript #WebDevelopment #Frontend #CodingTips #ArrayMethods #DevTips #Syncfusion

I recently came across a project that relied heavily on barrel files to keep imports clean. It looked neat at first, but we started noticing slower page loads and tricky circular dependency issues. Barrel files are convenient, but overusing them can hurt performance and maintainability. Great tool , just don’t overuse it. #JavaScript #TypeScript #Frontend #WebPerformance

🚨 Quick JavaScript challenge Looks like a simple object method accessing this.name. Nothing fancy. Should work… right? But the output is not what most people expect. Before running it - Ask yourself: 👉 Does an object create scope? 👉 Where does this really come from? 👉 Arrow vs normal function - who controls it? Guess the output 👇 #JavaScript #Frontend #CodingChallenge

If a component needs 15 props,  it's trying to tell you something. Listen. Yep. That component is screaming at you And what it’s saying is: "I'm doing too much." What I would ask in a code review if I see too many props passed to a react component: 1️⃣ Can any of these be grouped? 2️⃣ Is there a missing parent component? 3️⃣ Are we passing data or describing behaviour? 4️⃣ Would this be clearer with composition? #frontend #react #cleancode #javascript

React in 2026 is becoming more async-first and server-aware. Less boilerplate. Cleaner architecture. Better full-stack flow. I wrote a short Medium article explaining what changed and why it matters 👇 📖 https://lnkd.in/gvwfSgRx Also made a quick YouTube Short summary ⚡ 🎥 https://lnkd.in/g5eWQUQu #React #React19 #WebDevelopment #JavaScript #Frontend #FullStack

Day 9 of #75Hard Today was a reminder of how easy it is to forget the basics when libraries do the heavy lifting. While building a modal, I revisited: What a backdrop actually is (not CSS magic, but a real DOM layer) How event bubbling works Why stopPropagation() is critical to prevent unwanted closes Frameworks and UI libraries abstract these details so well that we stop questioning why things work — until we have to build them ourselves. Good reminder for me: If you don’t understand the core reason, you’re just assembling pieces — not engineering. Back to fundamentals. On to Day 10. #75Hard #JavaScript #WebDevelopment #Frontend #LearningInPublic #VueJS

🔹JavaScript Tip: bind vs call vs apply These three methods are often confusing, but they all exist for one main reason: controlling the value of this when calling a function. Here’s a simple breakdown 👇 ✅ call() Invokes the function immediately Arguments are passed one by one ✅ apply() Invokes the function immediately Arguments are passed as an array ✅ bind() Does not invoke the function Returns a new function with this (and optional arguments) permanently bound Perfect for callbacks and event handlers Understanding these three makes working with callbacks, event listeners, and frameworks much easier. #JavaScript #WebDevelopment #Frontend #ProgrammingTips #CleanCode

🤔 How do you decide between using a 𝗦𝗲𝘁 or an 𝗮𝗿𝗿𝗮𝘆 in #JavaScript? Recently I realized that I often reach for arrays by default, even in cases where a Set would be a better fit: when I only care about unique values and fast lookups, not about order. But in many everyday cases with small collections, arrays are still perfectly fine and often more readable. I’m currently trying to be more intentional: if I think “collection of unique things”, I reach for Set; if I need order, duplicates or array utilities, I stick with arrays. How do you handle this in your projects? #JavaScript #TypeScript #CleanCodeSolutions #WebDevelopment #Frontend

JavaScript Challenge (Don’t run it 😄) Most developers say they understand the Event Loop… Let’s test that 👇 What will be the exact output of this code? console.log("start"); setTimeout(() => console.log("timeout"), 0); Promise.resolve()  .then(() => console.log("promise1"))  .then(() => console.log("promise2")); console.log("end"); 👉 In what order will it print? 👉 Explain using Microtasks vs Macrotasks Drop your answer before running it 👇 #JavaScript #Frontend #WebDevelopment #CodingChallenge #InterviewPrep #SoftwareEngineering