Understanding localStorage and sessionStorage in JavaScript

In this lesson, I shared the basics of variables and data types in JavaScript. These are essential concepts that help store and manage data in any program. Practicing simple examples in VS Code makes it easier to understand how values work and how JavaScript handles different types of data. #JavaScript #WebDevelopment #FrontendDevelopment #CodingJourney #LearnJavaScript #Developers #VSCode #ProgrammingBasics

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JSON is commonly used in APIs and web  applications to send and receive structured data. It  is easy for humans to read and easy  for machines to parse.. . . . . . . . . . #JavaScript #JS #WebDevelopment #Coding #Programming #FrontendDevelopment #BackendDevelopment #FullStack #WebDesign #Tech #Developer #CodeNewbie #JavaScriptFrameworks #NodeJS #ReactJS #VueJS #Angular #HTML #CSS #TechCommunity #hackforge

JavaScript Array Methods you CAN’T ignore as a developer 🚀 If you’re still looping everything manually… you’re doing it wrong. Here are must-know array methods every dev should master: 🔥 filter() → Get matching data 🔥 map() → Transform data 🔥 find() → First match 🔥 some() → At least one condition 🔥 every() → All conditions must pass 🔥 includes() → Check existence 🔥 findIndex() → Get index 🔥 push()/pop() → Modify array 💡 Pro Tip: Use `map()` + `filter()` heavily in React for clean & scalable code. Master these = cleaner code + better interview performance 💯 💾 Save this for later 💬 Which one do you use the most? #javascript #webdevelopment #reactjs #codingtips #frontend #backend #programming

🚀 Mastering JavaScript Arrays now! 🚀 Arrays are a fundamental data structure in JavaScript, allowing you to store multiple values in a single variable. They are versatile and can hold different types of data, making them essential for developers to manage and manipulate data efficiently in their applications. To create an array in JavaScript, start by declaring a variable and assigning it to square brackets containing your values. Access elements using their index, starting from 0. Remember to use built-in array methods like push() and pop() to add or remove elements easily. ```javascript let fruits = ['apple', 'banana', 'orange']; console.log(fruits[0]); // Output: apple fruits.push('grape'); // Add 'grape' to the end fruits.pop(); // Remove the last element ``` Pro tip: Use array destructuring to unpack values from arrays into distinct variables, enabling cleaner and more concise code. Common mistake: Forgetting that array indices start at 0 can lead to errors in accessing elements, so always count from 0 when working with arrays. 🤔 What's your favorite method to manipulate arrays? Share your tips! 🤓 🌐 View my full portfolio and more dev resources at tharindunipun.lk #JavaScript #Programming #WebDevelopment #CodingTips #ArrayManipulation #DeveloperCommunity #CodeNewbie #TechTalk

HTML Script Loading Scenario A developer writes: <script src="app.js"></script> Where should this script be placed for better page load performance? A. Inside <head> without attributes B. At the end of <body> C. Anywhere, no difference D. Inside <title> 💬 What’s your answer? #BuildSmart #SoftwareEngineers #itskill #programmer #codinglife #javascript

🚀 Mastering the Basics of JavaScript! From understanding variables to working with loops, functions, and events — these notes cover the core building blocks of web development 💻 📌 Key Takeaways: • Introduction to JavaScript & its real-world use • Variables, Data Types & Operators • Conditional Statements & Loops • Functions & Events handling • Arrays, Objects & Core Concepts Strong fundamentals = Strong developer 🔥 #JavaScript #WebDevelopment #CodingJourney #Programming #LearnToCode #DeveloperSkills #TechLearning #FrontendDevelopment

🧠 A simple Node.js concept that makes a big difference in real-world applications: Event Loop One of the biggest reasons Node.js is fast is not magic. It’s the Event Loop + Non-blocking I/O. Here’s a simple way to understand it 👇 👉 In traditional servers (like Java/Python sync code): • One request = one thread • If a task (DB/API) takes time → thread is blocked 👉 In Node.js: • Single-threaded • But non-blocking So what happens? 1) Request comes in 2) If it’s a fast task → handled immediately 3) If it’s slow (DB call / API) → sent to background 4) Node moves to next request 5) When response is ready → callback/promise resolves 💡 That’s why Node.js can handle thousands of requests efficiently. ⚠️ But here’s the catch: If you write blocking code like: • Heavy loops • CPU-intensive logic • Sync functions (fs.readFileSync) 👉 You block the entire server ✅ Best practices I follow: • Use async APIs • Avoid CPU-heavy work (use workers if needed) • Keep request cycle lightweight • Use queues for heavy tasks 👉 Simple rule: Node.js is fast… until you block it. What’s one Node.js concept that took you time to understand? #NodeJS #JavaScript #BackendDevelopment #SystemDesign #Developers

🚀 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 𝐒𝐞𝐫𝐢𝐞𝐬 — 𝐀𝐫𝐭𝐢𝐜𝐥𝐞 𝟎𝟐 𝙇𝙖𝙗𝙚𝙡𝙚𝙙 𝘽𝙤𝙭𝙚𝙨: 𝙐𝙣𝙙𝙚𝙧𝙨𝙩𝙖𝙣𝙙𝙞𝙣𝙜 𝙑𝙖𝙧𝙞𝙖𝙗𝙡𝙚𝙨 𝙖𝙣𝙙 𝘽𝙖𝙨𝙞𝙘 𝙏𝙮𝙥𝙚𝙨 𝙞𝙣 𝙏𝙮𝙥𝙚𝙎𝙘𝙧𝙞𝙥𝙩 𝐕𝐚𝐫𝐢𝐚𝐛𝐥𝐞𝐬 in programming are like boxes that store data. In real life, we use labels to easily identify what’s inside a box, right? Because if a box has a label, it’s easy to understand what’s inside. If it doesn’t, things get confusing. The same concept applies to programming. But in 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭, these boxes don’t have labels. So inside a single JavaScript variable, you can store: 👉 a 𝙣𝙪𝙢𝙗𝙚𝙧 👉 a 𝙨𝙩𝙧𝙞𝙣𝙜 👉 a 𝙗𝙤𝙤𝙡𝙚𝙖𝙣 This flexibility might seem useful… But it’s one of the main reasons behind 𝐫𝐮𝐧𝐭𝐢𝐦𝐞 𝐞𝐫𝐫𝐨𝐫𝐬. 💡 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 solves this problem using 𝙩𝙮𝙥𝙚𝙨. It allows you to add labels to your variables: 👉 If you only need to store 𝙩𝙚𝙭𝙩 inside a variable, you can use the 𝙨𝙩𝙧𝙞𝙣𝙜 type. 👉 If you only need to store 𝙣𝙪𝙢𝙗𝙚𝙧𝙨 inside a variable, you can use the 𝙣𝙪𝙢𝙗𝙚𝙧 type. 👉 If you only need to store 𝙩𝙧𝙪𝙚/𝙛𝙖𝙡𝙨𝙚 inside a variable, you can use the 𝙗𝙤𝙤𝙡𝙚𝙖𝙣 type. By using these types: ✅ Your code becomes safer ✅ Bugs are reduced ✅ Developer experience improves In this article, I explain: 📦 What variables really are 🏷️ How type labels work in TypeScript 🧠 What Type Inference is ⚙️ The role of the TypeScript compiler 📖 Read the full article here: 👉 https://lnkd.in/g725SZP4 #TypeScript #JavaScript #WebDevelopment #Programming #LearningInPublic #SoftwareEngineering🚀