🔹 JavaScript Hoisting — Lecture 1 | Hoisting Explained for Beginners One of the most confusing JavaScript concepts for beginners is Hoisting. As a MERN Stack developer, understanding hoisting helps you write predictable and bug-free code. 🎯 What is Hoisting in JavaScript? Hoisting is JavaScript’s default behavior where variable and function declarations are moved to the top of their scope before execution. JavaScript runs code in two phases: ✅ Memory Creation Phase → Variables stored as undefined → Functions stored completely ✅ Execution Phase → Code runs line by line Example console.log(x); var x = 10; Output: undefined Why? JavaScript internally treats it like this: var x; console.log(x); x = 10; Key Understanding ✔ Hoisting moves declarations, NOT values ✔ Happens before code execution ✔ Important for execution flow 🚀 Senior Developer Tip: Always declare variables before using them to avoid unexpected behavior. 🔎 Keywords: JavaScript hoisting, JS execution flow, learn JavaScript, MERN stack JavaScript #JavaScript #MERNStack #WebDevelopment #ProgrammingBasics #LearnJavaScript
JavaScript Hoisting Explained for Beginners
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🚀 Just published my new blog on JavaScript DOM! While learning JavaScript, I wanted to understand how the DOM actually works. So I built two small projects to practice it: ✅ Simple Todo App ✅ Todo App that fetches Quotes using an API Through these projects I learned: • How JavaScript interacts with HTML elements • DOM manipulation basics • Creating elements dynamically • Fetching data using Fetch API Writing about what you learn is one of the best ways to reinforce concepts and help others learn too. https://lnkd.in/dy6hjMmm Would love to hear your feedback! #javascript Hitesh Choudhary Piyush Garg Akash Kadlag Jay Kadlag Nikhil Rathore
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New Blog Published: Mastering call(), apply(), and bind() in JavaScript Ever wondered why the this keyword in JavaScript sometimes behaves unexpectedly? Many developers memorize call(), apply(), and bind() but don’t fully understand why these methods exist or when to actually use them. In real-world JavaScript applications, controlling this is important for writing reusable functions, borrowing methods between objects, and fixing context issues in callbacks. In this blog, I break down: • Why JavaScript needed call(), apply(), and bind() • The core difference between these three methods • When to use each one in real scenarios • A simple restaurant chef analogy to make the concept intuitive • Practical code examples to make everything clear Written in a simple and practical way for developers who want to truly understand how this works in JavaScript. 🔗 Read here: https://lnkd.in/g6-xTkcS Hitesh Choudhary Piyush Garg Akash Kadlag Jay Kadlag Anirudh Sir #JavaScript #SoftwareDevelopment #Programming #WebDev #ChaiCode
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JavaScript modules are one of the most important features for writing clean and scalable code, especially as projects start to grow. A module is simply a JavaScript file that contains code we want to organize or reuse in other parts of our application. Instead of writing everything inside one large script file, modules allow us to split our code into smaller, focused files that handle specific responsibilities. This approach becomes extremely helpful when working on larger projects. Different parts of the application such as utilities, API calls, UI logic, or state management can live in separate modules. This makes the code easier to read, maintain, debug, and collaborate on with other developers. Modules work using two key concepts: export and import. We export variables, functions, or classes from one file, and then import them into another file where they are needed. This creates a clear and controlled way for different parts of an application to communicate with each other. Another advantage of modules is that each module has its own scope. Variables inside a module are private unless explicitly exported, which helps prevent naming conflicts and keeps the global scope clean. As JavaScript applications grow larger and more complex, understanding how to structure code using modules becomes an essential skill for building maintainable and scalable applications. #JavaScript #WebDevelopment #FrontendDevelopment #TechJourney #Growth
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🚀 JavaScript Object Cheat Sheet Every Developer Should Know Objects are the heart of JavaScript. Almost everything in JavaScript revolves around objects, properties, and methods. If you master objects, you automatically level up your JavaScript skills. Here’s a quick JavaScript Object Cheatsheet to remember the most useful patterns: 🔹 Object Declaration const user = { name: "Profile", followers: 4817 } 🔹 Access Properties user.name // dot notation user["name"] // bracket notation 🔹 Delete Property delete user.name 🔹 Iterate Objects for (const key in user) { console.log(key, user[key]) } 🔹 Copy Object const copy = {...user} // shallow copy const deepCopy = structuredClone(user) // deep copy 🔹 Freeze Object Object.freeze(user) 🔹 Destructuring const { name, followers } = user 🔹 Getter & Setter const user = { name: "Profile", get profile(){ return this.name } } 💡 Pro Tip: Using destructuring, spread operator, and Object.freeze() properly makes your JavaScript code cleaner and safer. 📌 Save this cheat sheet so you can quickly review JavaScript objects anytime. If this helped you: 👍 Like 💬 Comment your favorite JavaScript feature 🔁 Share with a developer friend Follow for more JavaScript Cheat Sheets & Developer Tips 🔗 LinkedIn: mdyousufali205 #javascript #webdevelopment #programming #coding #frontend #softwareengineering #developers #javascriptdeveloper #codingtips #devcommunity #learnprogramming #100DaysOfCode #webdev
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Many beginners get confused between Synchronous vs Asynchronous JavaScript. #Day35 But the concept is actually very simple. Imagine this 👇 🏦 Synchronous JavaScript Like standing in a bank queue. One person finishes, then the next person starts. 👉 Code runs line by line 👉 Next task waits until the previous one finishes Example: console.log("Start"); console.log("Processing..."); console.log("End"); 🍔 Asynchronous JavaScript Like ordering food online. You place the order and continue doing other work. Food arrives later. 👉 JavaScript doesn't wait 👉 Other code runs while waiting Example: console.log("Start"); setTimeout(() => { console.log("Hello after 2 seconds"); }, 2000); console.log("End"); Output: Start → End → Hello after 2 seconds 💡 Why Asynchronous is powerful? Because it helps handle: ⚡ API calls ⚡ Timers ⚡ Database requests ⚡ File loading without blocking the application. 🔥 If you are learning JavaScript or React, you MUST understand this concept. Next step after this is: • Callbacks • Promises • Async / Await • Event Loop Follow Arun Dubey for more related content! 💬 Question for developers Before today, did you clearly understand Synchronous vs Asynchronous JavaScript? Comment YES or NO 👇 #javascript #webdevelopment #reactjs #frontenddeveloper #coding
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🚀 My First JavaScript Blog is Live! Many developers think JavaScript variables are simple… But when you go deeper, there are many concepts that often create confusion. So I wrote my first blog where I covered the topic in depth to clear those doubts. In this blog, I explained: 🔹 What variables actually are 🔹 Why we need variables 🔹 Variable naming rules 🔹 Different ways to declare variables 🔹 "var" and the problems with it 🔹 "let", "const", and their differences with "var" 🔹 Shadowing and illegal shadowing 🔹 Hoisting and the Temporal Dead Zone (TDZ) 🔹 Reference and Syntax errors 🔹 Overview of JavaScript data types (Primitive vs Non-Primitive) My goal with this blog is simple: make core JavaScript concepts crystal clear for developers. This is just the first blog in the series — more deep-dive JavaScript blogs are coming soon. Mentions: Hitesh Choudhary Jay Kadlag Akash kadlag, Anirudh Jwala, Nikhil Rathore 📖 Read the blog here: https://lnkd.in/gtnpakX2 I’d love to hear your thoughts and feedback! 🙌
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🚀 JavaScript Concepts Series – Day 4 / 30 📌 Scope in JavaScript 👀 Let's Revise the Basics 🧐 Understanding Scope in JavaScript is essential because it determines where variables are accessible in your code. Scope controls the visibility and lifetime of variables. 🔹 Global Scope Variables declared outside any function or block. Accessible anywhere in the program. 🔹 Function Scope Variables declared inside a function. Accessible only within that function. Commonly created using var. 🔹 Block Scope Variables declared inside { } like loops or if statements. Accessible only inside that block. Created using let and const. 💡 Key Insight Global Scope → Accessible everywhere Function Scope → Accessible only inside the function Block Scope → Accessible only inside the block {} Understanding scope helps you avoid variable conflicts, write cleaner code, and debug issues faster. More JavaScript concepts coming soon. 🚀
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🚀 Just published a new blog on Arrow Functions in JavaScript. In this article, I explained: • What Arrow Functions are • Basic syntax and parameters • Implicit vs Explicit return • Difference between normal functions and arrow functions • Simple examples using math operations and "map()" Arrow functions help make JavaScript code shorter, cleaner, and more readable, which is why they are widely used in modern JavaScript development. 📖 Read the full article here: https://lnkd.in/gipX6C2x Big thanks to Hitesh Choudhary Sir and Piyush Garg Sir for their amazing teaching through Chai Aur Code that keeps inspiring me to learn and share. ☕💻 #javascript #webdevelopment #arrowfunctions #chaiAurCode #learninginpublic
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Most JavaScript developers get confused with this 🤯 But once you understand how a function is called, everything becomes clear. ⚡ What is this in JavaScript? this is a keyword that refers to the object that is executing the current function. But the tricky part is… 👉 this changes depending on how the function is called. Example: const user = { name: "John", sayHi: function() { console.log("Hi, " + this.name); } }; user.sayHi(); // Hi, John Here this refers to the user object. 💡 Key things to remember ✔ this depends on how the function is called ✔ Inside an object method → this refers to that object ✔ Arrow functions → use the parent scope this ✔ call() / apply() can manually change this 📌 Pro Tip: Always check how the function is called, not where it is written. If you're learning JavaScript, mastering this will save you from many debugging headaches later. Follow for more JavaScript concepts explained simply. 🚀 #javascript #webdevelopment #frontenddevelopment #coding #programming #js #learnjavascript #softwaredeveloper #100daysofcode #developer
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