Binding this in JavaScript Class Event Handlers

30 Days JavaScript Challenge: Day 25 ✅ Today’s problem was about merging two arrays of objects based on a common key (id). Sounds simple at first, but it had a few interesting parts: Handling unique ids Merging objects when ids match Making sure values from the second array override the first Keeping everything sorted It’s actually very close to real-world scenarios like combining data from two APIs or updating existing records with new data. Problems like this make you think more about data handling and structure, not just loops and conditions. Day by day, things are starting to connect better. 🚀 #javascript #leetcode #webdevelopment #frontenddeveloper #codingchallenge #learninginpublic #developers #programming #buildinpublic #JavaScriptMastery

30 Days JavaScript Challenge : Day 20 ✅ Today’s problem was about checking whether a given object or array is empty. At first glance, it looks very simply, but it makes you think about how data structures actually store values whether it’s checking keys in an object or elements in an array. Also tried to think about how this can be done efficiently, even aiming for O(1) time complexity. Problems like these remind me that even basic concepts can have deeper layers when you try to implement them properly. 20 days in consistency is building up, one problem at a time. 💻🚀 #javascript #leetcode #webdevelopment #frontenddeveloper #codingchallenge #learninginpublic #developers #programming #buildinpublic

30 Days JavaScript Challenge : Day 24 ✅ Today’s problem was about sorting an array using a custom function. Instead of directly sorting values, we use a function fn to decide the order — basically telling JavaScript how to compare elements. At first it feels simple, but it actually shows how powerful sorting can be when you control the logic: Sorting objects based on a property Sorting nested arrays Custom ranking based on conditions It’s one of those concepts that looks basic but is used everywhere in real projects. Slowly getting more clarity on how to write flexible and reusable logic in JavaScript. #javascript #leetcode #webdevelopment #frontenddeveloper #codingchallenge #learninginpublic #developers #programming #buildinpublic

this in JavaScript looks simple… until it starts pointing to the wrong thing 😵 Same function, different outputs — just because of how it’s called. So what does this actually mean? 👉 It’s not about where the function is written 👉 It’s about who is calling the function In this blog, I’ve explained: What this really represents this in global context this inside objects and functions How calling context changes everything Kept it simple with clear examples (no unnecessary theory) ✨ 🔗 Read here: https://lnkd.in/dMkPffeA Would appreciate your feedback 🙌 #javascript #webdevelopment #programming #coding

Came across a classic JavaScript interview question today! 💡 👉 Find the first repeating character in a string. 🔹 The trick is simple track characters as you iterate and return the first one you’ve already seen. 🧠 Key Insight: “Seen before? Return immediately.” — no need for nested loops or sorting. This approach gives an efficient O(n) solution 🚀 #JavaScript #CodingInterview #DSA #WebDevelopment #Programming #TechSkills #CareerGrowth

🚀 Level Up Your JavaScript Skills with 10 Powerful One‑Liners! Whether you're optimizing your workflow, cleaning up code, or just love writing elegant snippets, these JavaScript one‑liners can save you time and boost your productivity. From array manipulation to generating random numbers — a few lines can do a lot more than you think! ✨ 💡 Perfect for beginners exploring modern JavaScript and pros who enjoy writing clean, efficient code. #JavaScript #WebDevelopment #FrontendDevelopment #Coding #Programming

Why does this print 4 4 4 4 in JavaScript? 🤯 A small setTimeout() + var question that teaches a big concept: closures, scope, and async behavior. When you understand why it happens, JavaScript starts making much more sense. #JavaScript #WebDevelopment #Programming #Coding #FrontendDevelopment #SoftwareEngineering #Developer #TechCommunity #LearnToCode #AsyncJavaScript #Closures #SetTimeout #100DaysOfCode #CodingTips #JavaScriptDeveloper

What are variables in JavaScript? Variables in JavaScript are used to store data that can be used and updated in your program. They act like containers for values such as numbers, strings, or objects. You can declare variables using let, const, or var. let allows changes, const is for values that shouldn’t change, and var is older and less commonly used. Choosing the right one helps avoid errors. Variables make your code flexible and reusable, allowing you to store user input, perform calculations, and manage data efficiently. #webdeveloper #tech #coding #programming

Sharing beginner-friendly notes on Object-Oriented Programming (OOP) in JavaScript 🧠 Covered core concepts like Classes, Constructors, Inheritance, Encapsulation, Polymorphism, Getters/Setters, Static methods, and Private fields (#) with clear examples. Also explained how super, instanceof, and prototypes work behind the scenes. A practical guide to understanding how OOP works in modern JavaScript. Feedback and suggestions are welcome! #JavaScript #OOP #Coding #Learning #Programming

30 Days JavaScript Challenge : Day 26 ✅ Today’s problem was about flattening a multi-dimensional array, but with a twist we were given a depth n and had to flatten only up to that level. Not a full flatten, not a shallow one… somewhere in between. It really makes you think about recursion and depth control: When to go deeper When to stop How to keep track of current depth What I liked is how this problem builds intuition around nested data structures something you see a lot in real apps (APIs, configs, UI trees, etc.). Slowly getting more comfortable with recursion and thinking in layers. #javascript #leetcode #webdevelopment #frontenddeveloper #codingchallenge #learninginpublic #developers #programming #buildinpublic