Optimize Performance Before It's Too Late: 2026 Benchmarks

This image explains how useEffect works in React in a simple way. It shows that when a component is added to the screen (mount), the effect runs. When certain values change (dependencies), the effect runs again. It also demonstrates that when the component is removed from the screen (unmount), a cleanup process can run. Overall, it helps manage side effects like fetching data, updating the DOM, and handling events in React components. #reactjs #javascript #webdevelopment #frontenddevelopment #reactdeveloper #coding #programming #softwaredeveloper #webdev #100DaysOfCode #learninpublic #codingjourney

Why does the loading spinner sometimes never stop? No errors. No crash. Just spinning. It looks like a UI issue. But most of the time, it’s not. It’s an error handling problem. I wrote a simple breakdown of why this happens and how to fix it. Read here: https://lnkd.in/gPvF_iK7 #JavaScript #Frontend #Programming #WebDevelopment #SoftwareEngineering

The "this" Keyword: Predictable or a Trap? 🧐 Most devs think they understand this, until it returns undefined. Can you guess the output of this simple object? const obj = { a: 10, f: function () { return this.a; }, }; console.log(obj.f()); The answer seems easy... but do you know what happens to this if we change that function to an Arrow Function? 🤯 In my latest video, I break down exactly how execution context works so you never have to guess again. #JavaScript #WebDev #CodingTips #SoftwareEngineering #Programming

I had a habit of attaching click handlers to every single item in a list… It worked, so I never questioned it. But as the list grew, something felt off… more code, more listeners, and probably more memory being used 🤔 That’s when I came across event delegation. Instead of adding multiple listeners, you just attach one listener to the parent and let events bubble up. Same result… but way cleaner. Less memory usage. Better performance. Now whenever I see multiple listeners on similar elements, it just feels… unnecessary 😅 Sometimes the smarter solution isn’t adding more… it’s doing less in the right place. #JavaScript #WebDevelopment #Frontend #Coding #Performance #DevTips #Programming #CleanCode #LearnToCode

Day 2- of Leetcode 30 days of javascript. Problem 2620 The problem statement was to return a function inside a parent function, and when the parent function is called, it should return in subsequent ascending +1 result. i,e n, n+1, n+2 for any value of n. This problem was based on closures and lexical scope of higher ordered function. There are many approach for this problem but I tried by setting a counter n - 1 and then incrementing it by 1, ie counter += 1. I am open to advice and please comment on how can I improve. #Leetcode #coding #javascript #Logic #growth #programming #higherorderfunction #closures #lexicalscope #scope

🚀 Day 22 - Poll answer & Explanation const map = new Map(); map.set("a", 1); map.set("b", 2); const set = new Set([1, 2, 3, 3]); console.log(map.size, set.size); 2 3  Explanation (simple & clear):  - Map stores key-value pairs → "a" and "b" → size = 2  - Set stores only unique values → duplicates removed  - [1, 2, 3, 3] → becomes [1, 2, 3] → size = 3  Key Point:  - Map counts unique keys  - Set automatically removes duplicate values  Output:  2 3 #JavaScript #JSInterview #FrontendDevelopment #WebDevelopment  #CodingChallenge #JSConcepts #Developers #Programming  #TechInterview #LearnJavaScript #100DaysOfCode #CodeNewbie  #SoftwareDevelopment #CodingTips #JSBasics #DevelopersLife

Mastering JavaScript Closures: A Comprehensive Guide with Practical Examples JavaScript closures are a fundamental concept that allows a function to remember and access its lexical scope even when it's executed outside that scope. This tutorial demystifies closures, explaining their mechanics, practical applications, and how they empower powerful design patterns in your JavaScript code. Read the full article 👇 https://lnkd.in/gK4b6gvw #Technology #Programming #WebDevelopment #SoftwareEngineering #Coding #JavaScript #JSClosures #JavaScriptClosures #FunctionalProgramming #FrontendDevelopment #FutureOfWork #DigitalTransformation

Revisiting the JavaScript DOM (Document Object Model) today to strengthen my fundamentals. Sometimes the best way to move forward in development is to go back and revise the basics. While revising, I focused on: • What the DOM actually is • The core pillars of DOM manipulation • Handling multiple events • Selecting multiple elements efficiently • Using setTimeout and setInterval • Building small interactive examples Every time I revisit these concepts, I discover something new and deepen my understanding of how JavaScript interacts with the browser. Small steps every day toward becoming a better developer. 🚀 #javascript #dom #webdevelopment #frontenddevelopment #codingjourney #100daysofcode #programming #developerlife #learninginpublic

🚀 Day 18 - Poll answer & Explanation || vs ?? — Small difference, big impact ⚡ const a = 0; const b = 0; console.log(a || 'default');  // 'default' console.log(a ?? 'default');  // 0 const config = { timeout: 0 }; console.log(config.timeout || 5000); // 5000 console.log(config.timeout ?? 5000); // 0 Explanation: || (OR operator): - Returns the first "truthy" value - 0 is falsy → so it picks 'default' or 5000 ?? (Nullish Coalescing): - Returns the right side ONLY if value is null or undefined - 0 is NOT null/undefined → so it keeps 0 Key Difference: || treats 0, "", false as falsy ?? treats only null and undefined as empty Use ?? when 0 or false are valid values #JavaScript #WebDevelopment #Frontend #Coding #100DaysOfCode #JSConcepts #LearnToCode #Programming #Developer #CodeNewbie

🚀 Handling Large Lists in React Large lists can slow down the UI. Here are some strategies that consistently work in production 👇 ⚡ 1. Use Virtualization Render only visible rows. ⚡ 2. Use Pagination Divide large lists into pages. ⚡ 3. Avoid Rendering Huge DOM Trees Keep UI lightweight. ⚡ 4. Memoize Row Components Prevent unnecessary rerenders. ⚡ 5. Optimize Key Usage Use stable keys. #React #programming #webdevelopment #reactjs  #coding #dailyUpdate #Developer 💻