✂️ Mutating arrays with JavaScript 𝘀𝗽𝗹𝗶𝗰𝗲() The 𝘀𝗽𝗹𝗶𝗰𝗲() method in JavaScript mutates an array by removing and inserting elements at a given index. It returns an array of removed elements. ✅ Basic syntax ✅ Removing values ✅ Adding values ✅ Replacing values Save & share with your team! Download Our Free Full-Stack Developer Starter Kit ➡️ https://buff.ly/JbI0Qof --- If you found this guide helpful, follow TheDevSpace | Dev Roadmap, w3schools.com, and JavaScript Mastery for more tips, tutorials, and cheat sheets on web development. Let's stay connected! 🚀 #javascript #arrays #splice

I've been writing JavaScript for over a year. Thought I understood var, let, and const. I didn't. "var a" inside a block accessible outside. Prints "10". "let b" inside the same block, try to access it outside and you get: ReferenceError: b is not defined Same block. Same code. Completely different behavior. Turns out var lives in global memory. let and const get their own separate block scope. Once the block is done, they're gone. This is why going back to fundamentals matters #JavaScript #WebDev #LearnInPublic #NamasteJavaScript

Built a fully functional Smart Event Dashboard from scratch using pure HTML, CSS & JS — no frameworks, no libraries. Just clean code and creativity. 🎨💻 The best way to learn is to build. What are you building this week? 👇 #JavaScript #WebDev #100DaysOfCode #FrontendDeveloper #CodingJourney

📚 Blog Series Update! Between projects and busy work hours, I spent some time this week working on Part 3 of my Rediscovering JavaScript series, and now I’m happy to share a new weekend read: Variables, Scope, and Memory 🚀 In this blog post, I explore some of the most important JavaScript fundamentals: 🔹 Primitive vs reference values 🔹 Scope and scope chain 🔹 Execution context 🔹 Memory management & garbage collection These topics may sound basic, but they explain many of the “why did this happen?” moments developers face while coding. 🔗 Part 3 Rediscovering JavaScript (Part 3): Variables, Scope, and Memory: https://lnkd.in/ek8CySJc 🔗Friend link: https://lnkd.in/e4ddDhSc ✨ For this journey, I’m using Professional JavaScript for Web Developers by Nicholas C. Zakas as my main guide. ☕ Wishing you a wonderful weekend and an enjoyable read with your coffee! #JavaScript #WebDevelopment #Frontend #Programming #SoftwareEngineering #DevTips #Medium

🚨 Ever wondered why your JavaScript code doesn’t freeze even when tasks take time? Here’s the secret: the event loop — the silent hero behind JavaScript’s non-blocking magic. JavaScript is single-threaded, but thanks to the event loop, it can handle multiple operations like a pro. Here’s the simplified flow: ➡️ The Call Stack executes functions (one at a time, LIFO) ➡️ Web APIs handle async tasks like timers, fetch, and DOM events ➡️ Completed tasks move to the Callback Queue (FIFO) ➡️ The Event Loop constantly checks and pushes callbacks back to the stack when it’s free 💡 Result? Smooth UI, responsive apps, and efficient async behavior — all without true multithreading. Understanding this isn’t just theory — it’s the difference between writing code that works and code that scales. 🔥 If you’re working with async JavaScript (Promises, async/await, APIs), mastering the event loop is a game-changer. #JavaScript #WebDevelopment #AsyncProgramming #EventLoop #Frontend #CodingTips

What will happen if you call a variable before initialization? 🤔 That is called Hoisting 👉 "JavaScript moves declarations to the top of their scope before execution" Sounds confusing? Let’s break it down 👇 When you create variables or functions, JavaScript runs your code in 2 phases: 1️⃣ Memory Creation Phase Before execution, JavaScript scans your code and allocates memory Example (mentally): var a → undefined let b → uninitialized (Temporal Dead Zone) 2️⃣ Execution Phase Now JavaScript runs your code line by line 👉 If you access variables before initialization: var → returns undefined let / const → ReferenceError Why does this happen? Because: var is initialized with undefined in memory let and const are hoisted but stay in the Temporal Dead Zone (TDZ) until the line where they are declared Simple way to remember: var => “exist, but don’t have a value yet” let / const => “Don’t touch before declaration” ⚡ Bonus: Function declarations are fully hoisted, so you can call them before defining them Curious how functions behave in hoisting? 🤔 Go Google function vs function expression in JavaScript — it’ll surprise you 👀 That’s hoisting in JavaScript 🚀 #javascript #webdevelopment #coding #frontend #learninpublic #hoisting

I thought JavaScript runs code line by line. It doesn't. Before executing a single line, the JS engine creates something called an Execution Context. Think of it like a stack of plates. Each function call adds a new plate on top. Last plate added is the first one removed. That's your Call Stack. Inside each execution context, two phases happen: Memory Phase — Variables are stored before code runs. var gets stored as undefined. let and const? They exist but are untouchable. That zone is called the Temporal Dead Zone. Execution Phase — Now the code actually runs. Values get assigned. Functions get called. I spent 4 years writing JavaScript. Never knew this was happening under the hood. Day 2. Still here. #JavaScript #BuildingInPublic #100DaysOfCode

Writing Cleaner Code: Mastering Template Literals in JavaScript As developers, keeping our code readable is as important as making it functional. Traditional string concatenation can often lead to messy, hard-to-maintain code. In this quick tutorial, I demonstrate how Template Strings (Backticks) can: ✅ Simplify dynamic content injection. ✅ Handle multi-line strings effortlessly. ✅ Allow logic (like Ternary Operators) directly within the string. This simple switch makes your codebase much cleaner and more professional. Check out the demo in the video! #JavaScript #WebDevelopment #SoftwareEngineering #CodingBestPractices #CleanCode 

Understanding the "this" keyword in JavaScript 🔍 The value of "this" depends on how a function is called — not where it is defined. Here are the key cases: • Global scope → "this" refers to the global object (window in browser) • Object method → "this" refers to the object calling the method • Constructor function → "this" refers to the new instance created • Event handler → "this" refers to the element that triggered the event Mastering "this" helps in writing better object-oriented and reusable code. Still practicing with different examples to understand it deeply 💻 #javascript #webdevelopment #frontend #learninginpublic #mern

𝗦𝗶𝗻𝗴𝗹𝗲-𝗧𝗵𝗿𝗲𝗮𝗱𝗲𝗱 𝗝𝗮𝗵𝗮 𝗖𝗮𝗻 𝗛𝗮𝗻𝗱𝗹𝗲 𝗠𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗧𝗮𝘀𝗸𝘀 JavaScript is single-threaded but it can handle multiple tasks efficiently. How? The answer lies in understanding synchronous vs asynchronous behavior. You will learn how to handle tasks in a simple way. Synchronous code runs line by line, one step at a time. - Each task must finish before the next one starts. If one task takes time, everything else waits. Asynchronous code allows tasks to run without blocking the main thread. - Long tasks are handled in the background, and the program keeps running. You can handle tasks like: - Fetching data from an API - Loading a file - Waiting for user input These tasks take time. Asynchronous code helps you handle them efficiently. You can build responsive apps and handle real-world tasks by understanding synchronous vs asynchronous behavior. It helps you understand callbacks, promises, and async/await. Source: https://lnkd.in/g78_-iAk