JavaScript & Redux Toolkit Practice: call(), apply(), bind() & State Management

Today I learned how form handling works in React using React Hook Form, which makes managing multiple input fields and validations super easy! 🔹 What is React Hook Form? React Hook Form is a library that simplifies form handling in React. Instead of manually managing state for every input, it lets React handle forms efficiently with minimal re-renders. 🔹 Managing Multiple Inputs All input fields can be registered using the register function, and validations can be added easily. Example idea: import { useForm } from "react-hook-form"; const { register, handleSubmit, formState: { errors } } = useForm(); <form onSubmit={handleSubmit(onSubmit)}> <input {...register("name", { required: "Name is required" })} /> {errors.name && <p>{errors.name.message}</p>} <input {...register("email", { required: "Email is required" })} /> {errors.email && <p>{errors.email.message}</p>} <input type="submit" /> </form> 🔹 Handling Validations & Errors register connects inputs to React Hook Form errors object shows validation errors Works well with external validation libraries like Yup 💡 Key Takeaway Using React Hook Form helps us: ✔ Reduce boilerplate and re-renders ✔ Manage multiple inputs efficiently ✔ Handle validations easily ✔ Build scalable and maintainable forms Special thanks to Devendra Dhote and Sheryians Coding School for the insights! 📌 Day 17 of my 21 Days React Learning Challenge #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic #ReactForms

Today I explored some important JavaScript and React concepts that help in writing better and more predictable code. ** Scope System in JavaScript I learned how variables are accessed in different scopes and how JavaScript manages them. • Lexical Scope – A function can access variables from its parent scope. • Variable Shadowing – When a variable inside a function has the same name as a variable outside it. • Block Scope – Variables declared with let and const are limited to the block where they are defined. ** Updating State in React I also learned the difference between primitive values and reference values when working with useState. • Primitive values (number, string, boolean) can be updated directly. • Objects and Arrays should be updated by creating a new copy instead of modifying the original state. Example: setUser({ ...user, age: 22 }); Understanding how scope, state updates, and data structures work makes React applications more reliable and easier to maintain. Every day of learning is helping me become more confident in building modern web applications. Looking forward to learning more and building exciting projects! @Sheryians Coding School @Sarthak Sharma @Ritik Rajput @Daneshwar Verma @Devendra Dhote #ReactJS #JavaScript #FullStackDeveloper #WebDevelopment #CodingJourney #LearnInPublic

Learning React can be exciting, but JSX can also be confusing at the beginning. When I started working with React, JSX looked like HTML, yet small syntax mistakes kept breaking my code. So I decided to write a beginner-friendly article explaining some of the most common JSX mistakes developers make and how to fix them. If you're currently learning React or transitioning from JavaScript to React, this article will help you avoid some frustrating debugging moments. I just published it on Medium: “5 JSX Mistakes Every React Beginner Makes (And How to Fix Them)” Feel free to read, clap, and share your thoughts. I’d also love to hear what JSX challenges you faced when you were starting out. 🔗 https://lnkd.in/d3hGff33 #ReactJS #JavaScript #WebDevelopment #FrontendDevelopment #Programming

Have you ever wondered why, in a world full of diverse programming languages, one name always rises to the top when it comes to web development? 🤔🌐 • Why is JavaScript always used? 🟨 The simple answer: a historical monopoly. Browsers only speak JavaScript. Back in the 1990s, when the first browsers were being built, developers needed a way to make web pages interactive ✨ So, JavaScript was born… and every major browser followed suit. Today, browsers like Chrome, Safari, and Firefox all come with built-in JavaScript engines ⚙️ That means if you want to run code in a browser… JavaScript is the native language. • Can we use something else? 🤓💡 Yes. You’re not completely locked in anymore. There are two powerful escape routes: 1️⃣ Transpiling (Write anything → Convert to JS) 🔄 You can write code in other languages and translate it into JavaScript before it reaches the browser. 🔹 TypeScript – JavaScript with superpowers (and fewer bugs) 🔹 Dart – Used with Flutter for web apps 🔹 PyScript / Brython – Run Python in the browser 🐍 2️⃣ WebAssembly (Wasm) 🚀 This is where things get futuristic. WebAssembly lets you run languages like: 💻 C++ 🦀 Rust ⚡ Go 🔷 C# …directly in the browser at near-native speed. 👉 Example: Microsoft’s Blazor lets you build web apps using C# instead of JavaScript. • So why does JavaScript still dominate? 👑 Even with all these alternatives… JavaScript still rules the web. 🔹 Massive Ecosystem 🌍 NPM is the largest library of code on the planet. Need a feature? Someone already built it. 🔹 Direct DOM Access ⚡ JavaScript can instantly update the webpage (DOM). Other technologies often need to “go through” JS, which adds friction. 🔹 Industry Momentum 🏢 25+ years of dominance means: 👨💻 Millions of developers 🏗️ Thousands of companies built on JS Switching away is like turning a cargo ship, not a speedboat. 💭 Final Thought JavaScript isn’t just a language anymore… It’s the operating system of the web 🌐⚡ If you found this helpful, let’s connect 🤝 #WebDevelopment #SoftwareEngineering #Programming #JavaScript #Frontend #Backend #TechCommunity

🚀 What I Learned Today – JavaScript Basics Today I revised some important JavaScript fundamentals: 🔹 Assignment Operators ("=", "+=", "*=", "%=") 🔹 Comparison Operators ("==", "===", "!=", ">", "<", ">=", "<=") 🔹 Logical Operators ("&&", "||", "!") 🔹 Conditional Statements ("if", "if...else", "else if", ternary operator) I also learned about prompt() for user input and type coercion (implicit & explicit type conversion). Using MDN Docs as a reference while learning JavaScript. Small steps every day to become a better developer. 💻 #JavaScript #WebDevelopment #LearningInPublic #CodingJourney

🚀 JavaScript Roadmap: Zero to Hero (12 Weeks) Still confused where to start in programming? Start with JavaScript — the backbone of the web 🌐 I’ve created a simple 12-week roadmap to help students and beginners become job-ready step by step. 📌 What you will learn: ✔ Web Basics (HTML, CSS, JS) ✔ DOM & Events ✔ Modern JavaScript (ES6+) ✔ Frontend (React) ✔ Backend (Node.js) ✔ Database (MongoDB / MySQL) ✔ Full Stack Development ✔ Real Projects & Job Preparation - Beginners with zero coding knowledge - Anyone who wants to build real projects 🔥 Golden Rule: Learn → Build → Fail → Improve → Repeat Don’t just watch tutorials ❌ Start building today ✔ 📍 Sri Pathrakali Digital Solutions, Kalugumalai 🌐 www.goldenwebportal.com #JavaScript #WebDevelopment #Programming #FullStackDeveloper #Coding #Students #CareerGrowth #LearnToCode #GoldenWebPortal #IndiaTech

Day 11 of documenting my journey as a Front-End Developer — Introduction to JavaScript ‎ ‎Today, I started learning JavaScript, and I had a big misconception at first—I thought JavaScript was an advanced version of Java. ‎ ‎I learned that this is not true. JavaScript and Java are completely different languages. JavaScript was created by Brendan Eich and was originally called Mocha, then LiveScript, before being renamed JavaScript to attract Java developers. ‎ ‎JavaScript is a high-level, interpreted programming language mainly used to make websites interactive. ‎One thing that stood out to me is how JavaScript executes code—line by line (synchronously), meaning order matters. ‎ ‎I also learned: ‎ ‎. JavaScript files are saved as .js (e.g., app.js) ‎. It is linked in HTML using: ‎ ‎HTML ‎<script src="app.js"></script> ‎ ‎. The defer attribute is used when the script is placed in the <head> to delay execution until the HTML loads ‎ ‎Interesting fact: ‎ ‎Different browsers use different JavaScript engines: ‎. Chrome ---V8 Engine ‎. Firefox----- SpiderMonkey ‎ ‎On comments I understood: ‎ ‎. JavaScript uses // for single-line comments ‎.  /* */ can also be used (same as CSS) ‎. But HTML comments (<!-- -->) do not work in JavaScript ‎ ‎Lesson learned: ‎Understanding the foundation of a language helps clear wrong assumptions before diving deeper. ‎ ‎#FrontendDevelopment #JavaScript #WebDevelopment #LearningJourney #BeginnerMistakes #WomenInTech #softwareengineering #developer #learninginpublic #techcommunity #careergrowth

Mastering JavaScript is essential for anyone looking to excel in web development. This language serves as the foundation for many popular frameworks, including React, Angular, and Node.js. For those eager to deepen their understanding and skills, the site https://javascript.info/ is a valuable resource. It offers comprehensive tutorials and insights that can help you become proficient in JavaScript. Embrace the journey of learning and enhance your development capabilities.

Variables in JavaScript 🚀 Every JavaScript program starts with ONE simple thing: a variable. If you're learning JavaScript, understanding variables is your first big step. A variable is like a container that stores data so your program can use it later. Think of it like a labeled box where you keep information. In JavaScript, we use variables to store things like names, numbers, or results. Example: let name = "Shital"; Now the variable name stores the value "Shital". Here are the basics every beginner should know: • Variables store data – text, numbers, true/false, objects, etc. • let is the most common way to create a variable in modern JavaScript • const is used for values that should not change • Good variable names make code easier to read Simple example: let age = 25; const country = "India"; Now your program remembers these values and can use them anytime. Small concept. Huge importance in programming. #JavaScript #WebDevelopment #LearnToCode #FrontendDevelopment #ProgrammingBasics #CodingForBeginners #JavaScriptLearning #SoftwareDevelopment #DeveloperCommunity #CodeNewbie

JavaScript isn’t just a language — it’s the foundation of modern web innovation. JavaScript is one of the most powerful and widely used programming languages for web development. Whether you're a beginner or refreshing your fundamentals, mastering the basics is essential. 🔹 Variables – Used to store data (let, const, var) 🔹 Data Types – String, Number, Boolean, Object, Array, Null, Undefined 🔹 Functions – Reusable blocks of code that perform tasks 🔹 DOM Manipulation – Interacting with HTML elements dynamically 🔹 Events – Handling user actions like clicks and inputs 🔹 ES6 Features – Arrow functions, template literals, destructuring, promises 👉 Strong fundamentals in JavaScript make learning frameworks like React, Angular, and Node.js much easier. 📚 Learning never stops — keep building, keep coding! #JavaScript #WebDevelopment #Programming #LearningJourney #FrontendDevelopment #Developers