Boost Your Page Load Speed: Normal vs. Async vs. Defer 🚀 Ever wondered why your website feels "heavy" or slow to load? It might be how you're calling your JavaScript. Check out this visual breakdown of how the browser handles <script> tags: 1️⃣ Normal Script (<script>) The "Stop Everything" approach. When the browser hits this tag, it pauses HTML parsing, fetches the script, executes it, and then continues parsing. ❌ Downside: Creates a "render-blocking" experience for users. 2️⃣ Async Script (<script async>) The "I'll do it when I'm ready" approach. The browser fetches the script in the background while the HTML continues to parse. However, the moment the script is downloaded, it pauses the HTML parser to execute. ⚠️ Best for: Independent scripts like Google Analytics or Ads where the order doesn't matter. 3️⃣ Defer Script (<script defer>) The "Gentleman’s" approach. Like async, it fetches the script in the background. But here’s the magic: it waits until the HTML parsing is 100% finished before executing. ✅ Best for: Your main application logic that needs the DOM to be fully ready. 💡 Pro-Tip for Interviews: Use async if the script doesn't depend on any other scripts. Use defer if your scripts depend on each other or the full DOM. Always put defer scripts in the <head>—it starts the fetch earlier without blocking the page! How are you optimizing your script tags? Let's discuss below! 👇 #JavaScript #WebPerformance #FrontendDevelopment #WebDevTips #CodingLife #HTML5 #PerformanceOptimization #Programming
Optimize Script Tags for Faster Page Load
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I built a “W3Schools-style” web dev reference — 160 tips with live demos — in ONE single HTML file. No frameworks. No libraries. Just pure HTML, CSS, and JavaScript. Here’s what’s inside: 🎨 47 CSS tips — clamp(), scroll snap, , light-dark(), content-visibility, gradient borders, and more 📄 30 HTML tips — native popover, inert attribute, <search> element, fieldset disabled trick, meter element, and more ⚡ 33 JavaScript tips — structuredClone, Object.groupBy(), AbortController, Intl formatters, crypto.randomUUID, and more 🚀 16 Performance tips — lazy loading, preload, WebP, dynamic import, break long tasks, and more 🔧 14 DevTools tips — CORS override, monitorEvents, conditional breakpoints, and more ♿ 9 Accessibility tips — skip links, , sr-only pattern, and more 🔍 11 SEO tips — structured data, canonical, rel=sponsored, and more Every tip has a code example. Most have a live demo you can interact with directly in the browser. No login. No paywall. Completely free. 👉 https://lnkd.in/gXREqV3v Built using an AI-assisted workflow (including Claude for ideation), but fully structured, implemented, and tested manually. What’s your most underrated web dev tip? Drop it below 👇 #webdevelopment #css #javascript #html #frontend #webdev #programming #coding #softwaredevelopment #developer
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DAY 16 — Making Your Website Interactive with Events (JavaScript) We’ve come a long way 🔥 From structure (HTML) ➡️ styling (CSS) ➡️ now bringing your website to life with JavaScript events. Today, we learn how websites respond to user actions like clicks, typing, and more. 💡 What Are Events? An event is something a user does on your webpage. Examples: * Clicking a Button 🖱️ * Typing in an input field ⌨️ * Hovering over an element 👆 JavaScript allows us to listen for these actions and respond. 🧠 Real-Life Example Imagine a light switch 💡 * You press it → Light turns ON * You press again → Light turns OFF That press is an event, and the action is the response 🧪 Example Code ```html <!DOCTYPE html> <html> <head> <title>Day 16</title> </head> <body> <h1 id="text">Hello 👋</h1> <button onclick="changeText()">Click Me</button> <script> function changeText() { document.getElementById("text").innerHTML = "You clicked the button! 🎉"; } </script> </body> </html> ``` 🔍 What’s Happening Here? * `onclick` → waits for a click event * When clicked → runs the `changeText()` function * JavaScript updates the text instantly ⚡ Why This Matters With events, you can build: * Buttons that respond * Forms that validate input * Interactive dashboards * Real-world web apps This is where your website stops being static and becomes alive 🔥 🎯 Mini Challenge Try this: * Change the text color when a button is clicked * Or display a message when the user clicks anywhere on the page 🏁 Progress Check You’re now deep into: * HTML ✅ * CSS ✅ * JavaScript basics ✅ You’re no longer just learning… You’re building real web experiences 💻✨ #30DaysOfCode #WebDevelopment #JavaScript #Frontend #BuildInPublic #LearningJourney
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🚀 HTML Tags Cheat Sheet – Every Developer Should Know This! 🗨️If you're starting your journey in web development or revising the basics, mastering HTML tags is non-negotiable. This cheat sheet covers all the essential tags you’ll use daily — from structure to forms and media. 💡 Why this matters: • Builds a strong foundation for frontend development • Helps you write clean and semantic code • Makes learning CSS, JavaScript, and frameworks easier 📌 What’s included: ✔ Basic structure tags ✔ Text formatting elements ✔ Lists, tables & media ✔ Layout and form tags Stop jumping between docs — keep this as your quick reference and level up your development speed. 🔥 Consistency > Complexity. Master the basics first. -------------------------------------------- #HTML5 #WebDevelopment #Frontend #CSS# #Programming #Developer #LearnToCode #JavaScript #TypeScript
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Hidden dropdowns are not built using <select> tag. They are handled by clicking the dropdown element and selecting options using XPath or CSS locator. Sometimes we use loops, waits, Actions class, or JavaScript executor to interact with them Click to open the dropdown First click the dropdown element and then select the option. driver.findElement(By.id("dropdown")).click(); driver.findElement(By.xpath("//li[text()='Option']")).click(); Sometimes dropdown options load dynamically, so we wait until the element is visible. WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(10)); wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath("//li[text()='Option']"))).click(); List<WebElement> options = driver.findElements(By.xpath("//ul[@class='dropdown']//li")); for(WebElement op : options){ if(op.getText().equals("India")){ op.click(); break; } } If the element is hidden or not clickable. JavascriptExecutor js = (JavascriptExecutor) driver; js.executeScript("arguments[0].click();", element); Useful when dropdown appears on hover. Actions act = new Actions(driver); act.moveToElement(driver.findElement(By.id("menu"))).click().perform();
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z-index: 9999 and your modal still renders behind the sidebar. Here's why. This isn't a browser bug. It isn't random. It's the CSS stacking context — one of the most misunderstood things in CSS. A stacking context is an isolated rendering layer. Elements inside it stack relative to each other — not to the whole document. z-index values inside one context cannot compete with z-index values in a different context. No matter how large the number. What silently creates a stacking context: → position + z-index (any value that isn't 'auto') → opacity less than 1 → transform (any value, even transform: translateY(0)) → filter (any value) → will-change → isolation: isolate The classic bug: Your modal has z-index: 1000. But its parent has transformed: translateX(0) — creating a new stacking context. Your modal's z-index only competes within that parent. The sidebar outside it with z-index: 10 wins. Fix 1 — Use a React Portal: Render the modal as a direct child of document.body. It now sits outside all stacking contexts. Fix 2 — Use isolation: isolate: Creates a stacking context without the side effects of transform or opacity. How to debug: → Chrome DevTools → Layers panel → visualise all contexts in 3D → Computed tab → look for stacking context markers in parent elements The rule to remember: Whenever you use transform, opacity, filter, or will-change on a container — you've created a new stacking context. Know this before you set z-index on anything inside it. #CSS #Frontend #WebDevelopment #JavaScript #StackingContext
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𝗧𝗵𝗲 𝗣𝗼𝘄𝗲𝗿 𝗼𝗳 𝗣𝗿𝗼𝘅𝗶𝗲𝘀 You use Javascript to interact with HTML. But some common constructions can be verbose. Take getElementBy... for example. You need to write: const myElement = document.getElementById("demo"); myElement.style.color = "red"; This uses 81 bytes of text and a constant in the global namespace. You can shorten it to: document.getElementById("demo").style.color = "red" But it still uses 52 bytes. There are other lengthy commands like: - document.getElementsByClassName() - document.getElementsByName() - document.getElementsByTagName() You can define an ID and a variable. But how do you know they refer to the same element? A smarter approach could be using DOM.ID(). But there is a better solution: use a Proxy. You can create a Proxy like this: getById = new Proxy({}, {get: (_, tag) => {return document.getElementById(tag);}}); This allows you to use IDs as variable names. For example: const {filename, "search-input": searchInput, "btn-search-prev": btnSearchPrev} = getById; You can rename IDs that are not valid in Javascript. HTML IDs are fixed and do not change during execution. So using getById is safe and efficient. Source: https://lnkd.in/ghJiBUys
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If HTML tags are the nouns and verbs of a webpage, Forms are the questions and answers. Day 4 Mentorship for Acceleration, I learnt that a website doesn't just have to be a monologue; it can be a dialogue. Just as <ul> holds your list items, the <form> tag is the "envelope." It gathers all the user's input and prepares it to be sent somewhere (like a database or an email). Well, every interaction usually involves two main parts: • <label>: The prompt which tells the user what you want (e.g. "First Name"). • <input>: The empty box where the user speaks back. You'll discover that <input> is a shapeshifter. By changing the type attribute, you change how the website hears the user with some of these prompts; • type="text": For short answers. • type="email": A smart box that checks for an "@" symbol. • type="password": A secretive box that turns characters into dots. • type="checkbox": For "choose all that apply." • type="radio": For "choose only one" (named after old car radio buttons where pushing one popped the others out!). To round off, we know a conversation isn't finished until someone says "Over and out." The <button type="submit"> is the handshake that completes the interaction. This Ends my beginner journey into HTML; its structures and forms. Stay connected as I delve into CSS tomorrow. #M4ACELearningChallenge #FrontendDev #WebDev #30DaysOfLearning #HTMLStructure
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A couple of weeks ago I wrote about Cascade, a typed CSS toolkit I built in OCaml. Cascade existed because I needed a CSS diff tool. I needed a diff tool because I was porting Tailwind CSS v4 to OCaml. I'm happy to announce that the port ships today as tw! tw passes all upstream tests extracted from Tailwind Labs' own TypeScript suites, and its CLI emits CSS that is byte-for-byte identical to the reference tailwindcss binary (under --optimized --minify). My OCaml web stack no longer depends on Node! The post has a live playground: paste any HTML snippet on the left and tw regenerates the stylesheet in a sandboxed iframe on the right. The whole demo is tw itself, compiled to JavaScript via js_of_ocaml. https://lnkd.in/g6mzq2nz #OCaml #css #opensource
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After getting comfortable with JavaScript fundamentals, I moved to working with the browser. Part that makes websites actually feel alive , the DOM and browser APIs. This is where things became more practical. I explored: ▸ DOM Manipulation — traversing the page as a tree and dynamically updating elements, attributes, and styles with JS ▸ Events & Event Handling — capturing clicks, keyboard inputs, and user interactions to build truly responsive UIs ▸ Forms & Validation — handling input fields, text areas, and select boxes, with validation logic to keep data clean ▸ Timers & Intervals — managing delayed executions and repetitive actions using setTimeout and setInterval ▸ Data Storage — persisting user data across sessions with localStorage, sessionStorage, and cookies Along the way, I built a few mini projects to apply these concepts. There's a massive difference between understanding a concept and building with it. The projects made everything click. This phase felt different from just learning syntax. It was more about connecting logic to actual user interaction. #JavaScript #WebDevelopment #DOM #LearningInPublic #Frontend
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Built My Own Tailwind-like CSS Engine “Chaiwind” I’ve been diving deep into how utility-first CSS frameworks like Tailwind actually work under the hood… and decided to build my own version from scratch. GitHub: https://lnkd.in/edbMhfxa Live Demo: https://lnkd.in/ebMWZ7BK What is Chaiwind? Chaiwind is a runtime CSS utility engine that: • Scans the DOM for custom classes (chai-*) • Parses them into CSS properties • Applies styles dynamically using JavaScript No build tools. No config. Just pure JavaScript. Tech Highlights: • DOM manipulation & query selection • Custom class parser logic • Dynamic style injection • Utility-first CSS architecture What I learned: • How Tailwind-like systems work internally • Runtime vs build-time styling tradeoffs • Writing cleaner, modular JavaScript • Thinking like a framework developer Still improving: • Performance optimization • Responsive & pseudo-class support • Better class parsing system This project pushed me beyond just using frameworks — into understanding how they are built. Would love feedback from the community Hitesh Choudhary Piyush Garg Chai Code #JavaScript #WebDevelopment #Frontend #TailwindCSS #OpenSource #BuildInPublic #chaicode
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