Jakub Andrzejewski’s Post

Imagine the below piece of JS code, what will the user experience? Hint: Answer lies in the understanding of the Event loop. #javascript

🔍 Understanding Web Performance: Parser Blocking vs Render Blocking When loading a webpage, JavaScript and CSS resources affect the process differently: How the browser loads and renders a page: Key points: Parser blocking (JavaScript): HTML parsing stops until the script downloads and executes → No content shown yet (blank screen). Render blocking (CSS): HTML parsing continues but rendering waits until styles are loaded → Content visible but unstyled or blank briefly. Optimizing these improves page speed and user experience! #WebDevelopment #FrontEnd #Performance #JavaScript #CSS #WebPerf #LoadingOptimization #CriticalRenderingPath #DeveloperTips

This diagram illustrates how Shadow DOM encapsulates content within a custom element (<custom-element></custom-element>), keeping its styles and structure isolated from the main DOM. Perfect for building reusable, secure, and maintainable web components. #ShadowDOM #CustomElements #HTML #CSS #JavaScript #WebComponents #Locators #Encapsulated #ShadowHost #ShadowRoot

𝐘𝐨𝐮𝐫 𝐝𝐞𝐬𝐢𝐠𝐧 𝐜𝐚𝐧 𝐛𝐞 𝐩𝐞𝐫𝐟𝐞𝐜𝐭. 𝐘𝐨𝐮𝐫 𝐜𝐨𝐝𝐞 𝐜𝐚𝐧 𝐛𝐞 𝐜𝐥𝐞𝐚𝐧. But if your website is slow… nothing else matters. Performance isn’t a feature. It’s the foundation. Here are powerful 𝐅𝐫𝐨𝐧𝐭-𝐄𝐧𝐝 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 tips to make your website lightning fast #FrontendDeveloper #WebPerformance #CodingTips #JavaScript #React #Angular #SpeedOptimization #WebDev #HamzaBabar

After more than a decade of relying on jQuery, we’ve officially moved on. What once powered the web now slows it down and we’re embracing faster, modern alternatives instead. Discover the 4 reasons why by reading our new blog: https://bit.ly/3MALKPE #atypic #blog #jQuery #WebDevelopment #JavaScript

Day 14 of My Web Development Journey ⚙️ Today was all about JavaScript logic. I practiced: • Nested conditions • Using && and || properly • Understanding truthy and falsy values One small change in condition order gave a completely different output. That showed me something clearly — JavaScript is not about syntax, it’s about thinking in steps 🧠 JavaScript checks how clear your logic is. Less visual progress. More mental effort. 🚀 #Day14 #JavaScript #WebDevelopment #CodingJourney #LearnToCode #FrontendDeveloper #ProgrammingLife #BuildInPublic #DeveloperMindset #TechJourney

A reminder for clarity on web development skills: focus on the essentials. WATCH THE FULL VIDEO HERE : https://lnkd.in/ewyUmXKk Static code, built with CSS, HTML, and JavaScript, offers broad usability. Ensure files are downloadable and compatible with any static server. This approach harks back to fundamental web principles, offering a robust and universally applicable solution. #WebDevelopment #Frontend #JavaScript #HTML #CSS

https://lnkd.in/dgECwK-b Day 57/100 🚀 Refactored my AttendTrack project — improved the layout, fixed the counting functionality, and converted it into a PWA so it can work offline. #100DaysOfCode #JavaScript #WebDev

This image perfectly captures the evolution of a web developer’s toolkit by comparing it to building a home: In short: HTML structures it, CSS beautifies it, JavaScript animates it, and React scales it. #SoftwareEngineer #WebDeveloperJourney #TechCareer #BuildTheWeb #DevCommunity