Understanding JSX: JavaScript XML for React Development

You know how JavaScript performs one function at a time and it becomes time consuming when a function takes too long to complete? This is because Js is a single threaded language and this behavior is called as synchronous. It can perform one task at a time which blocks other code. This can be solved by using Asynchronous functions (non-blocking way). JavaScript can execute code in two different ways: Synchronous (Blocking) Code runs line by line Each task waits for the previous one to finish If one task is slow, everything else pauses Think of it as a single-lane road. Asynchronous (Non-blocking) Time-consuming tasks run in the background JavaScript continues executing other code Once the task is done, the result is handled. In the next post I will tell how asnyc functions work. See you later. Cheers!! #JavaScript #WebDevelopment #MERN #AsyncJS #LearningInPublic

Excited to share my new blog post: "JavaScript Promises: From Pending Proposals to Bollywood Bliss – A Desi Guide to Async Magic"! Read it here: https://lnkd.in/gFK6YNem Hitesh Choudhary Piyush Garg Akash Kadlag Anirudh J. Chai Aur Code #JavaScript #Promises #AsyncProgramming #WebDevelopment #TechBlog #IndianTechCommunity

Type Coersion in JavaScript. 1. "2" + "2", JavaScript thinks these are two strings that's why result will be 22. Here + is considered as concatenation operator. 2. So now 22 - "2" = 20, When we use -,/,÷ in between two variables JavaScript consider both variables as number that's why result of 22-"2"=20 #javascript #webdevelopment

𝗪𝗲𝗹𝗰𝗼𝗺𝗲 𝘁𝗼 𝗗𝗮𝘆 𝟭𝟲 JavaScript is single-threaded. So how can it handle: • Synchronous code • Promises • Timers All at the same time? The answer is task priority and the Event Loop. In this video, I demonstrate exactly how tasks are added and executed based on priority. 𝙒𝙝𝙚𝙣 𝙘𝙤𝙙𝙚 𝙧𝙪𝙣𝙨: -> Code executes first (Call Stack). -> Promise callbacks go to the Microtask Queue. -> setTimeout callbacks go to the Macrotask Queue. 𝙃𝙤𝙬 𝙩𝙝𝙚 𝙀𝙫𝙚𝙣𝙩 𝙇𝙤𝙤𝙥 𝙋𝙞𝙘𝙠𝙨 𝙏𝙖𝙨𝙠𝙨 When the Call Stack becomes empty: -> Run ALL microtasks (Promises first). -> Then run ONE macrotask (setTimeout). -> Repeat the cycle. Microtasks always have higher priority. 𝙏𝙝𝙞𝙨 𝙥𝙧𝙞𝙤𝙧𝙞𝙩𝙮 𝙨𝙮𝙨𝙩𝙚𝙢 𝙞𝙨 𝙬𝙝𝙖𝙩 𝙖𝙡𝙡𝙤𝙬𝙨 𝙅𝙖𝙫𝙖𝙎𝙘𝙧𝙞𝙥𝙩 𝙩𝙤: • Stay responsive • Execute async logic predictably • Simulate concurrency while staying single-threaded #JavaScript #WebDevelopment #FrontendDevelopment #EventLoop #AsyncJavaScript #SoftwareEngineering #DeveloppementWeb #JavaScriptFR

Schema validation is a critical part of building secure and reliable APIs. Here’s a side-by-side comparison of Express Validator, Joi, and Zod with practical examples to help you understand the differences in syntax and structure. Which one do you prefer in your Node.js projects — Express Validator, Joi, or Zod? #NodeJS #BackendDevelopment #JavaScript #WebDevelopment #APIs

Why const isn't actually "constant" in JavaScript 🤯 If you're new to JS, you might think const means the value can never change. But try this: const user = { name: 'Alice' }; user.name = 'Bob'; console.log(user.name); // Output: Bob Wait, what? Why didn't it throw an error? Here’s the deal: const creates an immutable binding, not an immutable value. It prevents you from reassigning the variable to a new memory address. It does NOT prevent you from changing the properties of an object or array. Key Takeaway: If you want a truly unchangeable object, use Object.freeze(). What’s a JS quirk that tripped you up when you first started? Let’s discuss below! 👇 feel free to reach me out for any career mentoring Naveen .G.R | CareerByteCode #JavaScript #WebDevelopment #CodingTips #Frontend #SoftwareEngineering

Most developers write React applications using modern JavaScript and JSX. But not every browser understands this syntax natively. That’s where Babel comes in. Babel transforms modern JavaScript into browser-compatible code — without forcing developers to change how they write their applications. What happens behind the scenes? • Babel parses the code into an Abstract Syntax Tree (AST) • It applies transformations using plugins and presets • It generates standard JavaScript that works across environments In React projects, Babel: ✔ Converts JSX into JavaScript ✔ Enables the automatic JSX runtime ✔ Adds smart polyfills only where required Understanding Babel isn’t just about tooling. It’s about building scalable, production-ready React applications that run reliably for every user — regardless of browser limitations. #React #JavaScript #Babel #WebDevelopment #Frontend #SoftwareEngineering #Programming #DeveloperTools #TechLearning #CleanCode

🚀 If...Else Statement in JavaScript The if...else statement helps your program make decisions. It runs one block of code when the condition is true, and a different block when the condition is false. This is how programs handle real-world situations. 🔹 Why it’s important? Because every real application needs logic. Your program must respond differently based on different conditions. 🔹 Simple Understanding: if → Executes only when the condition is true if...else → Handles both true and false cases Strong fundamentals build strong developers. #JavaScript #WebDevelopment #CodingJourney #FrontendDeveloper #LearnInPublic #100DaysOfCode

Understanding event.preventDefault() is fundamental in JavaScript. By default: • Forms submit • Links navigate • Browser triggers built-in actions Using preventDefault(): • Stops the automatic behavior • Lets JavaScript handle the logic • Essential for modern SPAs • Prevents unnecessary page reloads If you're building React or any SPA, this concept is non-negotiable. Master browser behavior before mastering frameworks.