JavaScript Revision Guide

Learning JavaScript basics step by step 💻 Today I understood the difference between var, let, and const. 👉 var → old, can redeclare & change (avoid) 👉 let → can change value 👉 const → cannot change value 💡 Simple rule: Use const by default, use let when needed. Small concepts like this help in writing better code every day #JavaScript #Coding #WebDevelopment #LearnToCode #Developers

This is one of the most confusing topics for beginners in JavaScript. 👉 == (Loose Equality) Compares values, but converts data types automatically That’s why it can give unexpected results. 👉 === (Strict Equality) Compares both value and type No conversion → more predictable and safer 🎯 Simple Rule to Remember: 👉 Always use === 👉 Use == only when you really understand type conversion #JavaScript #WebDevelopment #Frontend #Coding #Programming #LearnToCode #CodingForBeginners #SoftwareDevelopment #CleanCode #Developers

JavaScript concepts that finally clicked for me 👇 When I started learning JavaScript, I just wrote code without understanding what was happening behind the scenes. These 3 concepts changed everything: 1️⃣ Closures 🔐 Functions remembering variables even after execution — confusing at first, powerful once it clicks. 2️⃣ Event Loop 🔄 Understanding async behavior (setTimeout, Promises) made debugging 10x easier. 3️⃣ Promises & Async/Await ⚡ Cleaner, more readable async code. No more callback hell. 💡 Once these clicked, my code became more predictable and easier to debug. If you're learning JavaScript right now — focus on the fundamentals. They make everything else easier. #JavaScript #WebDevelopment #Frontend #MERN #Coding #Developers #LearningInPublic

Types of Functions in JavaScript... JavaScript offers multiple ways to write functions — each with its own use case: 💡 Knowing when to use each can make your code cleaner and more efficient. #JavaScript #WebDevelopment #Coding #Developers #LearnToCode

🚀 Understanding JavaScript Basics: Function vs Array vs Object If you're learning JavaScript, these three concepts are your foundation: 🔹 Function → Handles behavior Reusable blocks of code that execute when called. They can take inputs and return outputs. 🔹 Array → Manages lists An ordered collection of values, accessed using indexes. 🔹 Object → Structures data Stores data in key-value pairs, perfect for representing real-world entities. 💡 Mastering these core building blocks helps you write cleaner, more efficient, and scalable code. Whether you're a beginner or brushing up your fundamentals, getting clarity on these concepts is a game changer! #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #ReactJS #Learning #Developers #Tech

Just shared a quick and easy-to-understand PDF on JavaScript Execution Context 📘 If you’re learning JavaScript or struggling with concepts like hoisting, scope, or this, this will help you build a strong foundation. I’ve kept everything simple and beginner-friendly so you can grasp the core concepts without confusion. Have a look and let me know your thoughts 👇 Follow for more such content: Deval P. #JavaScript #WebDevelopment #Frontend #Learning #Developers #Coding #Tech #DevalP

Most people think full-stack development is complicated. It's not. If you know MERN Stack. One language. Four tools. Build anything. 🚀 Swipe to learn everything about MERN Stack from scratch 👆 Save this for later 🔖 Follow for more dev content every week. Which part of MERN are you learning right now? Comment below 👇 #mernstack #webdevelopment #javascript #fullstackdeveloper #coding

🚀 Master JavaScript String Methods Like a Pro! If you're working with text in JavaScript, these string methods will make your life much easier 👇 🔹 slice() – Extract a part of a string 🔹 substring() – Get text between two positions 🔹 replace() – Replace text with something new 🔹 toUpperCase() / toLowerCase() – Change text case 🔹 includes() – Check if a value exists in a string 💡 These small methods are powerful when building real-world applications like search, validation, and data formatting. 👉 Start using them today and level up your JavaScript skills! What’s your favorite JavaScript method? Let me know in the comments 👇 #JavaScript #WebDevelopment #Frontend #Coding #Programming #Developers #LearnToCode #100DaysOfCode #Tech

🚀 Small JavaScript tricks that save hours of debugging Over time, I’ve realized it’s not always the big concepts — it’s the small patterns that make your code cleaner and smarter. Things like null checks, optional chaining, and short-circuiting might look simple, but they seriously improve readability and reduce bugs. I’ve put together a few of my go-to JavaScript tricks in this post 👇 If you’re working with JS daily, these will definitely help you write better code. 💬 Which trick do you use the most? Let’s share and learn from each other. #JavaScript #WebDevelopment #CodingTips #ReactNative #Developers #Programming

🚀 JavaScript Array Methods Clean code starts with mastering the basics — and arrays are everywhere. Here are some of the most powerful JavaScript array methods every developer should know 👇 🔹 push() – Add element at the end
🔹 pop() – Remove element from the end
🔹 shift() – Remove element from the start
🔹 unshift() – Add element at the start
🔹 map() – Transform data
🔹 filter() – Select specific data
🔹 find() – Get first matching element
🔹 forEach() – Loop through elements 💡 Why it matters?
These methods help you write cleaner, shorter, and more readable code — a must-have skill for modern JavaScript development. 🎯 Pro Tip:
Prefer map(), filter(), reduce() over traditional loops for better functional programming practices. 📊 Save this post for quick revision & share with your dev network! #JavaScript #WebDevelopment #Frontend #Coding #Programming #Developers #100DaysOfCode #TechSkills #LearnToCode