Vue 3 for Beginners: Extending HTML, CSS, and JavaScript

Stop installing JS libraries for Tooltips and Dropdowns. 🛑 After 5+ years of Vue development, I’ve lost count of how many times I’ve fought with z-index, overflow: hidden, and refs just to get a simple popup to stay attached to a button. The "Vue way" usually meant onMounted hooks and third-party libraries like Floating UI. In 2026, we do it with zero JavaScript using CSS Anchor Positioning. The "New" Way (No JS, No Refs): We simply tell the browser: "This popup belongs to this button." <template>  <button class="anchor-btn">Hover Me</button>     <div class="tooltip">   I automatically follow the button!  </div> </template> <style scoped> .anchor-btn {  anchor-name: --my-tooltip; } .tooltip {  position: fixed; /* Or absolute */  position-anchor: --my-tooltip;     /* Stick the top of the tooltip to the bottom of the button */  top: anchor(bottom);  left: anchor(center);  transform: translateX(-50%); } </style> Why this is a game-changer for Vue Devs: No "Teleport" needed: Even if your tooltip is nested deep in the DOM, position: fixed with anchoring handles the overflow issues natively. Zero Lifecycle Management: No more onUnmounted to destroy popper instances. The browser handles the attachment logic. Performance: High-frequency repositioning during window resizing or scrolling happens on the compositor thread, not the JS main thread. We’re finally reaching a point where Vue can focus 100% on Business Logic, while the browser handles the Spatial Logic. Are you still shipping 20KB of JS just to position a menu, or have you switched to Anchor Positioning? Let’s talk below! 👇 #VueJS #CSS #WebDev #Frontend #CleanCode #WebPerformance

Nobody told me this when I started React. I used it for over a year without really getting it. I could build things. Components, hooks, state — all of it. But something was always slightly off. Like, I was constantly fighting the framework instead of working with it. I'd update the state and then immediately try to read it. I'd wonder why my UI wasn't reflecting what I just changed. I'd add more useEffects, trying to force things to sync. More code. More confusion. Then I came across three characters that broke it all open for me. UI = f(state) That's it. React has one rule. Your UI is not something you control directly — it's the output of a function. You give it your data. It gives you back what the screen should look like. You don't say "update this element." You say, "here's the data." React handles the screen. I know that sounds simple. But I genuinely wasn't thinking this way. I was still mentally treating React like jQuery — find the element, change it, done. That mental model works fine for jQuery. In React it fights you every step. The moment I stopped thinking about updating UI and started thinking about describing UI — everything got easier. My components got smaller. My bugs got fewer. My useEffects stopped multiplying. Because I finally understood: my only job is to get the state right. React's job is everything else. #React #JavaScript #Frontend #ReactJS #WebDevelopment #Programming #100DaysOfCode #SoftwareDevelopment

Why is your useEffect sitting idle even after you've updated the variable? Look at this snippet. If you’re coming from a Vanilla JS background, count = count + 1 looks perfectly fine. But in React? This code is technically "dead." Why this won't work: * Mutation != Re-render: You are updating a local let variable. React has no "spy" watching your local variables. Unless you call a state setter (like setCount), React doesn't know it needs to re-render the component. * The Lifecycle Gap: useEffect only checks its dependency array ([count]) when the component re-renders. Since the button click doesn't trigger a render, React thinks nothing has changed. * The "Reset" Trap: Even if the component did re-render for some other reason, the first line let count = 0; would run again, resetting your value back to zero every single time. The Fix? Stop treating React like a standard script. Use useState. When you use const [count, setCount] = useState(0), you’re telling React: "Hey, keep an eye on this value. If I change it via setCount, please refresh the UI and check my Effects." Pro-tip: In React, if you want the UI to "react," you have to use the Hook. Simple as that. #ReactJS #WebDevelopment #Frontend #CodingTips #IndiaDevs #Javascript

Lately, I’ve been focusing a lot on one thing: reusability. Building shared components and using them across different panels and applications has completely changed how I work. Everything feels faster, cleaner, and far more consistent. Instead of rebuilding the same UI again and again, I now rely on a single reusable component system that I can plug in wherever it’s needed. Here’s what improved as a result: • Better code reusability • More consistent UI across apps • Easier maintenance • Faster development cycles • Cleaner structure across multiple frontend projects Project stack: Vue 3, TypeScript, JavaScript, Vite, Vue Router, Pinia, PrimeVue, Tailwind CSS, Yarn Workspaces This setup is helping me get real-world experience in building scalable, well-structured frontend systems. #FrontendDeveloper #VueJS #JavaScript #TypeScript #Monorepo #YarnWorkspaces #ReusableComponents #WebDevelopment #FrontendArchitecture #PrimeVue #TailwindCSS

✨ Just wrapped a class on React — and my perspective on frontend dev has completely shifted. Before class, I thought React was just "fancy JavaScript." After class? I realize it's a whole new way of thinking about UIs. 🧠 Here's what clicked for me: 🔹 Components are like LEGO blocks Everything in React is a reusable piece — buttons, navbars, cards. You build once, use everywhere. No more copy-pasting the same HTML 10 times. 🔹 The Virtual DOM is React's superpower Instead of updating the entire page on every change, React creates a virtual copy of the DOM, compares it, and only updates what changed. Blazing fast. Incredibly smart. 🔹 State = the memory of your UI useState taught me that UI is just a function of data. Change the data → UI updates automatically. No manual DOM manipulation. No document.getElementById headaches. 🙌 🔹 Props make components talk to each other Data flows down through props, and events bubble up through callbacks. Once you get this parent-child relationship, React just makes sense. 🔹 JSX is not scary — it's beautiful HTML inside JavaScript? Sounds weird. But JSX lets you co-locate your logic and markup, making components self-contained and readable. 💡 The biggest lesson? React teaches you to think in components, not in pages. It's not just a library — it's a mental model for building modern UIs. If you're learning web development, don't skip React. It will change how you think about code. 🚀 What was YOUR "aha moment" with React? Drop it in the comments 👇 #React #WebDevelopment #Frontend #JavaScript #Learning #TechEducation #100DaysOfCode #ReactJS #CodingJourney

🚀 What is a Polyfill in JavaScript? (And why every frontend dev should care) Ever tried using a modern JS feature… and it just breaks in older browsers? 😅 That’s where Polyfills come in. 👉 A polyfill is a piece of code that adds support for features that a browser doesn’t natively support. 💡 Simple idea: “If the browser doesn’t support it, I’ll implement it.” 🔧 Example: Array.includes() polyfill if (!Array.prototype.includes) { Array.prototype.includes = function (value) { return this.indexOf(value) !== -1; }; } ✔️ Now even older browsers can use includes()! ⚙️ Why Polyfills Matter Ensure cross-browser compatibility Let you use modern JavaScript safely Critical for production-grade apps 🧠 Polyfill vs Transpiler Polyfill → Adds missing functionality Transpiler (Babel) → Converts modern syntax to older syntax 👉 You often need both in real-world apps. 📦 Pro Tip Instead of writing polyfills manually: Use core-js Use CDN like polyfill.io Let Babel handle it automatically ⚠️ Be mindful Polyfills can increase bundle size — use them only when necessary. 🔥 Takeaway Polyfills help you write modern code without breaking older environments — making your app more reliable and user-friendly. #JavaScript #WebDevelopment #Frontend #Coding #SoftwareEngineering #DevTips #100DaysOfCode #Programming #Tech #Developers

🚨 Small React mistake… big headache 👇 I used to write code like this without even thinking: if (condition) return null; useEffect(() => { // logic }, []); It looks completely fine, right? I thought the same ❌ Then suddenly this error shows up: 👉 "Rendered fewer hooks than expected" Took me some time to realize what was actually wrong. React expects hooks to run in the same order every single render. But in this case: • First render → component returns early → useEffect doesn’t run • Next render → useEffect runs And boom 💥 React gets confused because the order changed. The fix is simple (but easy to forget): useEffect(() => { // logic }, []); if (condition) return null; Now hooks always run first, no matter what 👍 💡 Lesson learned: Never put hooks after a condition or inside it. Always keep them at the top. Have you ever hit this error? It’s one of those bugs that looks small but wastes a lot of time 😅 #react #nextjs #javascript #frontend #webdev

𝐖𝐡𝐲 𝐄𝐯𝐞𝐫𝐲 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐒𝐡𝐨𝐮𝐥𝐝 𝐔𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐃𝐞𝐞𝐩𝐥𝐲 Frontend development is not only about creating beautiful designs it is also about making websites interactive, functional, and efficient. And for that, JavaScript is one of the most important skills every frontend developer must master. Understanding JavaScript deeply helps you: • Build dynamic and interactive user interfaces • Handle user actions and real-time updates • Work better with frameworks like React, Vue, and Angular • Improve website performance and user experience • Solve frontend problems with confidence Learning only basic syntax is not enough. A strong frontend developer understands how JavaScript works behind the scenes such as functions, scope, DOM manipulation, events, and asynchronous behavior. Tools and frameworks may change, but strong JavaScript knowledge always stays valuable. Master the foundation first. Because great frontend development starts with strong JavaScript understanding. #FrontendDevelopment #JavaScript #WebDevelopment #Programming #Coding #DeveloperGrowth #Learning #SoftwareDevelopment

Vue Composables are one of the cleanest ways to write reusable, maintainable, and scalable logic in modern frontend development. Instead of repeating the same state management, API handling, form logic, or lifecycle code across components, composables let you extract that logic into reusable functions using the Vue Composition API. Why composables matter: • Better code reuse • Cleaner components • Easier testing • Improved separation of concerns • More scalable Vue applications A good composable turns messy component logic into something simple, readable, and reusable. Examples of composables: ✅ useFetch() ✅ useAuth() ✅ useFormValidation() ✅ useDebounce() ✅ useTheme() The goal is simple: keep components focused on UI, and move reusable logic into composables. If you are working with Vue 3, learning composables well can seriously level up your code quality. Here’s a simple example of a Vue composable: // useCounter.js import { ref } from 'vue' export function useCounter() { const count = ref(0) function increment() { count.value++ } function decrement() { count.value-- } return { count, increment, decrement } } Usage in a component: <script setup> import { useCounter } from './useCounter' const { count, increment, decrement } = useCounter() </script> <template> <div> <p>{{ count }}</p> <button @click="increment">+</button> <button @click="decrement">-</button> </div> </template> #VueJS #Vue3 #JavaScript #FrontendDevelopment #WebDevelopment #CompositionAPI #Composable #SoftwareDevelopment #Programming #Coding #FrontendEngineer #Developer #UIEngineering #CleanCode #Tech

Why did I leave React? Here's why I do not regret it a single bit: So, about an year ago, I heard about a new JavaScript framework... typical right? Its name was SvelteJS and it offered the same features and same magical state management like React. At that point of time, I was in React's ecosystem and was using different frameworks like Next.js etc. I thought Svelte was pretty cute but a little bit under-developed to be used as a main replacement. Fast forward a couple months and Runes in Svelte basically changed the game. The simplicity of Svelte and "It just works" and developer experience and adaptability just made Svelte more appealing to me. So, I made a questionable decision which was... ditch React and move the entire workflow to Svelte. and I was shocked! not only did the number of migraines I have because of different React libraries colliding reduced to nearly zero, It was so simple to a point where I was convinced that I was doing something wrong and at that performance? It was truly something else. The thing is that Svelte directly compiles to Native JS (supports TS too) instead of relying on Virtual DOM through JSX. And you know what I can do to make React people jealous... I can apply CSS styling through a simple <style></style>... I never thought I'd say something like that but Svelte literally nailed simplicity. Native supports for SSR and Global States and Server Side Processing just made SvelteJS a better option in my opinion. Now, don't get me wrong... Next.js is still a fantastic platform to work with in React but barebone React Library just feels clunky now that I've switched and the ecosystem of React is still wayyy more broad than Svelte but I really want people to explore this and realize that frontend development is not always "Let me bang my head on the wall 4 times for this to work" and more like "Oh? that's it?". So yea ditched React, adapted to Svelte and I do not plan on going back :)