Remove Duplicates from Array in JavaScript

Faced a simple but interesting JavaScript interview question today! 💡 ❓ Find the most frequent character in a string. 👉 The trick? 🔹 Count frequencies and track the maximum while iterating. 🔥 Easy Trick to Remember: 🔹 Use an object → count frequency 🔹 Track max → compare while looping 🔹 No need for extra loops ✅ 🧠 Key Insight: “Count + Compare = Result” — no need for sorting or extra passes. #JavaScript #CodingInterview #DSA #WebDevelopment #Programming #TechSkills #CareerGrowth

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

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

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

A quick visual guide to JavaScript String Methods, the ones you use every day. Swipe through, save it, share it with someone learning JS. #javascript #webdevelopment #coding #softwaredevelopment #frontenddevelopment #techcareers #programming #javascriptdeveloper #learntocode #developerlife #softwareengineer #techeducation #webdev #codetips #devcommunity #fullstack #programmingtips #javascript #technology #careerdevelopment

JavaScript Interview Series – Day 17 Let’s understand Event Bubbling vs Event Capturing in JavaScript. When an event occurs on an element, it travels through the DOM in two phases: 👉 Capturing Phase (Top → Down) 👉 Bubbling Phase (Bottom → Up) #JavaScript #NodeJS #WebDevelopment #FrontendDevelopment #Programming #SoftwareEngineering #InterviewPreparation

🔄 Reverse an Array in JavaScript – Two Smart Ways! 🚀 Today I practiced one of the most common JavaScript interview questions: How to reverse an array? ✅ Using built-in method: reverse() ✅ Without using built-in method: Two-pointer swapping logic Why this matters: ✔ Strengthens array concepts ✔ Improves problem-solving skills ✔ Frequently asked in coding interviews Simple problem, but powerful logic. Mastering basics builds strong programming foundations. 💡 #JavaScript #WebDevelopment #FrontendDeveloper #CodingInterview #DSA #Programming #JavaScriptDeveloper #SoftwareDeveloper #CodingJourney #LearnToCode #TechSkills #Developers #Array #ProblemSolving #100DaysOfCode #InterviewPreparation #LinkedInLearning #CodeNewbie #TechCareers #CodingPractice

JavaScript Interview Series – Day 2 Let’s understand Callback vs Promise in JavaScript. A callback is a function passed as an argument and executed later. A promise is an object that represents the result of an async operation. Callbacks can lead to callback hell when nested, while promises provide a cleaner and more readable approach. #JavaScript #NodeJS #WebDevelopment #Programming #SoftwareEngineering #InterviewPreparation

JavaScript Interview Series – Day 18 Let’s understand What is Event Delegation in JavaScript. Event Delegation is a technique where we attach a single event listener to a parent element instead of adding listeners to multiple child elements. It works because of event bubbling. #JavaScript #NodeJS #WebDevelopment #FrontendDevelopment #Programming #SoftwareEngineering #InterviewPreparation