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⏩ Why a web app built with React is fast? Common answer: React does code minification, bundling,transpilation, content hashing, etc etc... But it's not React rather its transitive dependencies Parcel and Babel that do these all. 🤔 Then what exactly React does to make our app run fast? What lies inside npm i react and especially why npm i react-dom is required? Here comes the concepts of REACT FIBRE ARCHITECTURE, Virtual DOM, and React Hooks VDOM as a concept existed long back but React made it popular by building its own algorithm over the VDOM, known as the Reconciliation algorithm or Difference algorithm. This algorithm is an ongoing implementation that began in React16 and is part of React Fibre Architecture. It does the core work of react i.e., incremental rendering: the ability to split rendering work into chunks and spread it out over multiple frames.  We know DOM is a tree structure of HTML tags and Virtual DOM is a representation of an actual DOM as a js object.VDOM usually does 1way data binding only, but Reconciliation algorithm manipulates VDOM for 2way data binding. It quickly finds the difference between old VDOM and new VDOM and updates only the changed parts of actual DOM, rather than rendering the entire DOM tree. Thus UI output is fast as finding differences in VDOMs is quick because react keeps them as objects and not the HTML tree that we generally see. Comparing VDOMs and Rendering UI only with updated changes and not in its entirety is the best thing in React. 🤔 But how this algorithm gets triggered in our code? React Hooks: These are utility functions in React that generate a state variable. Whenever the state variable gets changed(due to function call and code logic)react automatically re-renders the updated DOM. As it maintains the current state of UI instantly it's called as "state" variable. Most importantly useState(),useEffect() perfectly do DOM Manipulations. In other frameworks(angular), there is no synchronization between data layer and UI layer. React using react hooks converts a normal js variable into a super powerful state variable which if gets updated, automatically re-renders UI by synchronizing data and UI .  Example: Consider a food order application with its home page showing data in 7 restaurant cards, on top, there is a button to filter top restaurants based on a rating above 4(say there are 3 such restaurants). As soon as we hit that filter button, UI immediately changes from 7 cards to 3 cards without rendering the entire page. (Check code) whenever the set function gets called, react identifies that the state variable got changed with new data, and with that updated data react renders new UI ie, react constantly keeps track of this state management functions. React is best at VDOM manipulations and hence the most popular UI lib. other frameworks with VDOMs are Vue.js, Mithril,Inferno,Preact,cycle.js Akshay Saini 🚀 #ReactJS #WebDevelopment #JavaScript #FrontendDevelopment #ReactDeveloper #Coding

🚀 Lazy Loading in React.js - A Quick Guide #Introduction: Lazy loading is a technique used to delay the loading of components until they are needed. This can greatly enhance your app’s performance, especially when you have large or multiple components. 1️⃣ Why Lazy Loading? 🏎️ Improves Performance: Reduces initial load time by splitting code. 🔁 Enhances User Experience: Loads only what is visible to the user. 📦 Reduces Bundle Size: Minimizes the amount of JavaScript needed upfront. 2️⃣ The Basics of React.lazy() React provides the React.lazy() function to load components lazily. const LazyComponent = React.lazy(() => import('./LazyComponent')); Here, LazyComponent is loaded only when it's needed. 3️⃣ Using React.Suspense for Fallback UI To handle the loading state while the lazy-loaded component is being fetched, we use the Suspense component. import React, { Suspense } from 'react'; const LazyComponent = React.lazy(() => import('./LazyComponent')); function App() { return ( <div> <Suspense fallback={<div>Loading...</div>}> <LazyComponent /> </Suspense> </div> ); } export default App; 🟢 The fallback prop defines what will be displayed while the component is loading. 4️⃣ Where to Use Lazy Loading? Routes: For large pages or route-based navigation. Heavy Components: Components with large libraries (charts, maps). Image Loading: Large images can also be lazy-loaded using libraries like react-lazy-load-image-component. 5️⃣ Code Splitting with Lazy Loading When using lazy loading, you are also enabling code splitting, where only parts of your code are loaded when needed, making your app faster and more scalable. 6️⃣ Advanced Use Case - Lazy Loading Routes Here’s how you can lazy load routes in a React app using react-router-dom: import { BrowserRouter as Router, Route, Routes } from 'react-router-dom'; import React, { Suspense } from 'react'; const Home = React.lazy(() => import('./Home')); const About = React.lazy(() => import('./About')); function App() { return ( <Router> <Suspense fallback={<div>Loading...</div>}> <Routes> <Route path="/" element={<Home />} /> <Route path="/about" element={<About />} /> </Routes> </Suspense> </Router> ); } export default App; 7️⃣ Tips for Efficient Lazy Loading 🧩 Group Components by Importance: Lazy-load only non-critical components. ⏲️ Limit Fallback Loading Time: Keep fallback UI simple and fast. 📈 Monitor Performance: Use tools like Lighthouse or React DevTools to monitor lazy loading effectiveness. #Conclusion Lazy loading in React.js can make your applications faster and more user-friendly by reducing the initial load time. By only loading what’s necessary, you improve performance and optimize resource usage. Start lazy loading your components today for a better React experience!

🚀 **Vue Tip: Creating Reusable Components with Slots** Building maintainable and scalable applications in Vue.js often involves creating reusable components. One powerful feature that Vue offers to enhance reusability is **slots**. Slots allow you to compose components flexibly, enabling you to pass content from a parent component to a child component. ### What Are Slots? Slots in Vue.js are placeholders inside your components that can be filled with content provided by the parent component. They make it possible to create highly reusable and configurable components. ### Types of Slots Vue provides three types of slots: 1. **Default Slot** 2. **Named Slots** 3. **Scoped Slots** Here’s a brief overview of each type: **Default Slot:** The default slot allows you to pass content from the parent component to the child component. ```vue <template>  <Card>   <p>This is some content for the card.</p>  </Card> </template> <script setup> import Card from './Card.vue'; </script> ``` **Named Slots:** Named slots allow you to define multiple slots with different names, giving you more control over where the content is injected. ```vue <template>  <Card>   <template #header>    <h3>Card Header</h3>   </template>   <template #body>    <p>This is the body of the card.</p>   </template>   <template #footer>    <small>Card Footer</small>   </template>  </Card> </template> <script setup> import Card from './Card.vue'; </script> ``` **Scoped Slots:** Scoped slots allow you to pass data from the child component back to the parent component, enabling more dynamic and flexible components. ```vue <template>  <ItemList :items="items">   <template #default="slotProps">    <li>{{ slotProps.item.name }} - {{ slotProps.item.price }}</li>   </template>  </ItemList> </template> <script setup> import { ref } from 'vue'; import ItemList from './ItemList.vue'; const items = ref([  { name: 'Item 1', price: '$10' },  { name: 'Item 2', price: '$20' }, ]); </script> ``` ### Conclusion Using slots in Vue.js is a powerful way to create flexible and reusable components. Whether you're using default slots, named slots, or scoped slots, this feature can significantly enhance the modularity and maintainability of your application. **Curious to learn more?** 🤔 Check out my latest articles on Dev.to for more Vue tips and tricks: Read the full article here: https://lnkd.in/ddfQGwtC Happy coding! 🚀 #Vue #JavaScript #WebDevelopment #Frontend #Coding #Programming #TechTips #Vue3 #DevCommunity

Can Microfrontends Be Made Using Astro Without Module Federation? 🚀 Can Microfrontends Be Made Using Astro Without Module Federation? Absolutely! Here's How: Microfrontends are revolutionizing web development by breaking down monolithic front-end applications into smaller, independent pieces. But did you know you can achieve this using Astro, even without relying on Module Federation? 🔍 What are Microfrontends? Microfrontends decompose a front-end app into individual, semi-independent "micro-apps" that can be developed, tested, and deployed separately. 🌟 Why Astro? Astro is a modern static site generator that supports multiple frameworks like React, Vue, and Svelte, making it an ideal choice for building microfrontends. Here's a quick guide to get you started: Step-by-Step Guide: 1) Set Up Astro Project: bun init astro 2) Organize Your Project Structure: Structure your project to accommodate different microfrontends. 3) Develop Independent Components: Create components using various frameworks. For example, a React header: // src/microfrontends/header/Header.jsx import React from 'react'; const Header = () => {  return (   <header>    <h1>My Microfrontend Header</h1>   </header>  ); }; export default Header; - - - And a Svelte profile: <!-- src/microfrontends/profile/Profile.svelte --> <script>  let name = 'User'; </script> <section>  <h2>Profile</h2>  <p>Name: {name}</p> </section 4) Integrate Microfrontends in Astro Pages: Use Astro to compose these components. --- // src/pages/index.astro import Header from '../microfrontends/header/Header.jsx'; import Profile from '../microfrontends/profile/Profile.svelte'; --- <html>  <body>   <Header />   <main>    <Profile />   </main>  </body> </html> 5) Configure Astro for Frameworks: Install the necessary integrations and update your config. bun i @astrojs/react @astrojs/svelte // astro.config.mjs import { defineConfig } from 'astro/config'; import react from '@astrojs/react'; import svelte from '@astrojs/svelte'; export default defineConfig({  integrations: [react(), svelte()], }); 6) Run and Build Your Project: See your microfrontends in action: bun dev 🌐 Advantages: - Decoupling: Each microfrontend is developed and deployed independently. - Flexibility: Use the best tool for each job within each microfrontend. - Performance: Astro's partial hydration boosts performance by loading only the necessary JavaScript. Adopting Astro for microfrontends without module federation offers a flexible, modular, and maintainable approach to modern web development. Ready to transform your front-end architecture? #webdevelopment #microfrontends #astro #javaScript #react #svelte #frontend #developertips #modernweb

Building Dynamic Forms with Vue.js Description: A guide on creating dynamic forms in Vue.js, including validation and state management. https://lnkd.in/e6ZhA7DE

Exploring Custom Directives in Vue 3: A Practical Guide 🚀 Excited to share my latest blog post on Vue.js development! 🎉 In this article, I dive deep into the world of custom directives in Vue 3. Custom directives are a powerful tool for extending Vue's functionality and enhancing user experience. I cover everything from understanding custom directives to developing them, along with the pros and cons. 🔍 Plus, I provide a practical example of creating a custom tooltip directive, highlighting its advantages and implementation details. This directive dynamically calculates available space and allows users to specify preferred tooltip positions, offering flexibility and improved UX. If you're a Vue.js enthusiast or looking to level up your front-end development skills, this post is for you! Check it out and let me know your thoughts in the comments. Happy coding! 🚀 https://lnkd.in/ewaE3Cv4 #VueJS #FrontEndDevelopment #CustomDirectives #UserExperience #WebDevelopment #ariqt #ariqtinternational Venkatesh Kondi Sumanth Thallapelly SHIVANI K Rupesh Kumar Vinay Gawli Roshan jameer shaik sai charan kutikuppala Raja Sai kiran shaik yousuf ali

Did Signals Just Land in React? Last week, Daishi Kato (creator of Waku) released use-signals, an experimental React hook for TC39 signals, which aims to demonstrate how Signals can work in React. What Are Signals? Signals have been in development for around 10 years and are used by JavaScript frameworks such as Angular, Vue, SolidJS, Qwik and Preact, (amongst others), and are used to manage client-side state. Signals are variables that auto-track where they’ve been used. When a change to a Signal occurs, its value is invalidated — which causes the UI state to update / re-render. For example, here’s a Signal named counter which holds a value of 0. View the code on Gist. Signals are fundamentally different from React’s useState. useState is a hook provided by React for managing state within functional components and allows you to declare a state variable and a function to update that variable. Signals are event listeners, or observers for handling asynchronous events or changes in data that occur outside of the component’s immediate control. As such, you’ll notice that there’s no “setter” function defined in the Signal declaration. Whereas, with React, there is. For example here’s how the above Signal would be declared in React. View the code on Gist. The reason Signals are an interesting concept is that React’s model of “top down” means that whenever a state value changes, all descendants of the component tree are re-rendered and any relevant changes to the UI are made — thus keeping the DOM / UI in sync with the application state. Using a Signal to manage state, however, allows for more fine-grained control over what parts of a UI are “re-rendered.” That’s not to say that Signals are any more performant than the React approach, but they are fundamentally different from one another. Signals Under the Hood As shown above, a Signal can be declared using the new constructor E.g.: View the code on Gist. Then, to “get” the value of a Signal you can use the .get() method; and to “set” or update a Signal, you can use the .set() method. E.g.: View the code on Gist. What Are Signals in React? Contrary to my above notes relating to how Signals work, that’s not how they work in React. To bypass React’s diffing would go against React’s core principles of declarative programming. So Signals in React will still use the VDOM and will still cause re-renders the same way a change to useState would. So what’s the point of Signals in React? This was my first thought too, and Daishi has even written about it: Why You Don’t Need Signals in React. So let’s dive a little deeper into the world of Signals. TC39 Proposal If the TC39 proposal is successful and Signals become natively available in JavaScript, we’ll be able to use Signals outside of frameworks. More than that, framework authors should — in theory — be able to implement Signals in a standardized way. Any advancements to Signals should benefit all frameworks that have implement...

Angular Material Support Continues; Also: Clerk SDK for Astro https://lnkd.in/gfTxqiYr Last month, Google announced that some of the engineers on its Material Web Components (MWC) team had been reassigned to work on its internal framework, Wiz.  That’s led to questions about ongoing support for Angular Material. MWC is a library of reusable, customizable UI components built on the web component standard. The components follow Google’s Material Design guidelines, making it easier to create a consistent look for web applications. The team at Angular made it clear this week that Angular Material won’t be impacted by the change because it does not use or depend on MWC. Instead, it uses a library called MDC Web under the hood. Normally, that’s just an internal implementation detail, they said, but the post goes on to explain that MDC is “a set of lower-level pieces that can be combined into components.” “Angular started incorporating MDC Web years ago, and Angular Material v15 made the components based on top of MDC Web the default,” the post noted. “Recently, in order to iterate more rapidly, rather than continuing to import MDC directly, the team is currently working to fork the code we depend on from MDC Web and will be iterating on it inside Angular Material going forward.” The change is not expected to have an impact on component APIs or their rendered output. Clerk Unveils Astro SDK The popular JS framework Astro has a new official SDK, @clerk/astro, which allows developers to add authentication and authorization into Astro applications. Clerk is a user management platform. The SDK ships with Clerk’s UI components, middleware, and low-level utilities for custom flows, the Clerk team said in the changeling. A quick start guide is available to help developers explore the offering. Meteor.JS 3 Releases MeteorJS is an open source, full-stack JavaScript framework designed for building real-time web and mobile applications. It can handle both client-side and server-side logic using JavaScript. The framework released version 3.0 this week, with the big news being that it now integrates with Node.js 20 and Express. The Node.js integration brings several enhancements to Meteor, including: Top-Level Await, which simplifies initialization of applications; and Stable Timers Promises API, which provides a promise-based alternative to traditional timer functions like setTimeout and setInterval. This update allows Meteor to fully take advantage of the latest features and performance improvements in Node.js 20, the team wrote. “The adoption of Express in Meteor 3 opens up new possibilities for developers, especially when building RESTful APIs or serving static files,” the team added. “Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.” In addition to Express and Node.js, there were several architectural changes that the team said would modernize...

Demystifying React Hooks: A Dive into useState React Hooks have revolutionized how we write components, bringing state management and side-effects into functional components with elegance and simplicity. Today, I'm excited to share a snippet from my recent exploration of the useState hook, which exemplifies its power and ease of use. Understanding useState : useState is a fundamental hook in React that allows you to add React state to function components. It accepts an initial state and returns two values: the current state and a function that updates it. Here's a concise example where useState powers a simple counter: import { useState } from 'react'; function App() {  let [counter, setCounter] = useState(15); // Initializing counter with 15  const addValue = () => setCounter(counter + 1);  const removeValue = () => counter >= 0 && setCounter(counter - 1);  return (   <>    <h1>Chai Aur React</h1>    <h2>Counter value: {counter}</h2>    <button onClick={addValue}>Add value</button><br />    <button onClick={removeValue}>Remove value</button>   </>  ); } In this example, useState is used to manage the counter's state within our functional component. The addValue and removeValue functions update the counter's state, demonstrating the hook's simplicity and power for state management in React. Why useState Matters The example illustrates key concepts of React Hooks: 1. Simplicity in State Management: Hooks simplify state management in functional components, making code more readable and maintainable. 2. Reactivity Made Easy: useState provides a straightforward way to create reactive UIs that update in response to state changes. 3. Function Over Class: By using hooks, we embrace a functional approach to component creation, moving away from class-based components and their complexities. This simple counter app, titled "Chai Aur React," not only demonstrates the practical use of useState but also serves as a gentle introduction for those new to React hooks. It underscores how a few lines of code can powerfully manipulate the component's state, making our development process more efficient and enjoyable. Conclusion : As we continue to explore React's hooks, useState stands out as a testament to the framework's commitment to simplicity and power. By integrating stateful logic in functional components seamlessly, React hooks open up a world of possibilities for developers.

Master Two-Way Binding in Vue.js 3! 🧩 Check out this guide on v-model and defineModel, which shows how to manage data flow between components seamlessly. Discover how to effectively use the composition API macro to create dynamic applications that enhance user experience! Explore it here: https://lnkd.in/d2ZUuB8E