Felix Fernando’s Post

An in-depth explanation of React state and everything around it. https://lnkd.in/dJnt25WR 𝗙𝗼𝗿 𝗺𝗼𝗿𝗲 𝘀𝘂𝗰𝗵 𝘂𝘀𝗲𝗳𝘂𝗹 𝗰𝗼𝗻𝘁𝗲𝗻𝘁, 𝗱𝗼𝗻'𝘁 𝗳𝗼𝗿𝗴𝗲𝘁 𝘁𝗼 𝗳𝗼𝗹𝗹𝗼𝘄 𝗺𝗲. #javascript #reactjs #webdevelopment

Looping inside React js : In React JSX, you can loop through arrays or objects to dynamically render multiple elements. This is often achieved using the .map() method. The map() method is a higher-order function in JavaScript that creates a new array by applying a provided function to each element of the original array. Syntax: array.map(callback(element, index, array)) This expressive article of map function helps to understand the Map Method deeply: https://lnkd.in/dRStb4nc #mapfunction #higherorderfunctions #reactjs #loopingInReact #MERNStack #FullStackDevelopment

#Hooks React hook is nothing but a JavaScript function 😀 . Yes, you read it right 👍 . It is a JavaScript function but has some special features. The 2 important react hooks are 1) useState() 2) useEffect() 👉 useState() -useState() hook is used to generate state variables. state variables maintain the state of the React component To use the useState() hook we have to import it into our project:- Syntax: import {useState} from "react"; we have to use {} brackets to import it, as it is a "named export" in react. Ex: to create a state variable const ExpData = ()=>{ const[data, setData] = useState(null); .......; .......; } In the above example, "data" is a state variable and to update the value inside it "setData()" function is used. what ever we give inside the brackets of useState() is the default value of the state variable here, data = null; To update the state variable "data" use "setData()" function. Ex: setData("Hello"), Here, In the "data" variable, "null" is replaced with the "Hello" word. 👉 What are the advantages of using useState() instead of a normal variable 1) State variables keep the UI in sync with the data. If the data is changed then the UI of the web page is also automatically changed. 2) When a state variable is updated every time, React re-renders the component in which it is defined, again on the webpage. In simple terms, If the value in the "state variable" is updated then the UI is also going to get updated with the value of "state variable". #React #frontend #webDevelopment #programming

🚨💡 Memory Leaks in JavaScript: They're like that leftover pizza you forgot in the fridge—it just sits there, takes up space, and eventually starts to stink up your code! 🍕🧠 Just stumbled upon this gem of a blog post that breaks down the common causes of memory leaks in JavaScript. If you're a dev like me, juggling closures, event listeners, and those pesky DOM references, you might wanna give this a read. Trust me, your app's memory will thank you! Check it out: https://lnkd.in/d5rCFdap #CodeLife #JavaScript #MemoryLeaks #DevLife #NodeJs

State is the most complex thing in React, and it's something both beginners and experienced developers struggle to understand. Understanding the concept of state in React is crucial for building dynamic and responsive applications. Check out this detailed explanation with examples! At freeCodeCamp https://lnkd.in/dSRYPjfU #ReactJS #WebDevelopment #JavaScript #ReactJS #WebDevelopment #JavaScript

I recently had the opportunity to read an article that provided a comprehensive overview of the React component lifecycle. The article meticulously explained the Mounting, Updating, and Unmounting phases, along with their associated methods. I found the insights offered in the article to be invaluable for anyone looking to enhance their understanding of React and improve the efficiency of their components. I am grateful to the author Rafael Cruz for sharing such a detailed and informative piece. For those interested in exploring this topic further, I highly recommend reading the article: https://lnkd.in/dF_eHrSB #React #WebDevelopment #JavaScript #FrontendDevelopment #ReactLifecycle

🚀 React At A Glance: Essential Quick Reference I've crafted a comprehensive yet concise set of React notes, ideal for developers seeking a quick refresher or a handy reference during projects. 🔗 Access the full notes here: https://lnkd.in/e5C2mfjx > 💡 Pro Tip: Save this link for those moments when you need to quickly recall a React concept or pattern during development! #React #JavaScript #WebDevelopment #FrontEndDev #ProgrammingNotes How do you use React in your projects? Any favorite features? Share your experiences in the comments!

We have an interesting feature with the new JS spec: Promise.withResolvers(). With that, we will be able to have more control over the way we declare our promises. Also, thank you Frontend Masters for this helpful article. https://lnkd.in/d-zwAniG #javascript

✅ A Proposal to Add Signals to JavaScript A (very) early stage proposal for bringing a new feature to ECMAScript/JavaScript: signals! The proposal brings aboard ideas from a swathe of popular frameworks and aims to align everyone and get us on the same page when it comes to working with state and making updates based upon changes to state. Link to the proposal (https://lnkd.in/g3cVzux5) #js #reactivity

### Day 58: Tricky Hint for Front-End Developers 🚨 **Front-End Dev Tip** 🚨 Reduce bundle size by using dynamic `import()` in JavaScript. This enables code splitting, where only the necessary parts of your code are loaded when needed, improving performance and load times. Smaller bundles, faster apps! ⚡ #Frontend #WebDevelopment #JavaScript #PerformanceOptimization #CodeSplitting #CodingTips Learn more about dynamic imports in this [MDN Web Docs article](https://lnkd.in/emVu-YqX).