Remove Duplicates from JavaScript Array with Set

💻 JavaScript Intermediate – Flatten a Nested Array Nested arrays can be tricky, but flattening them makes your data easier to work with. 📌 Problem: Convert a nested array into a single-level array. JavaScript code function flattenArray(arr) { return arr.flat(Infinity); } console.log(flattenArray([1, [2, [3, 4]], 5])); 📤 Output: [1, 2, 3, 4, 5] 📖 Explanation: • flat() method converts nested arrays into a single array. • Using Infinity ensures all levels of nesting are flattened. 💡 Tip: Great for working with complex JSON or API responses. #JavaScript #Coding #WebDevelopment #FrontendDevelopment #LearnToCode #ProgrammingTips

Ever copied a JavaScript object and later realized the original data also changed? We probably encountered the Shallow Copy vs Deep Copy problem. A small concept, but a huge impact on code reliability. #javascript #webdev #softwaredevelopment #codingtips #programminglife #reactdeveloper #devcommunity #techlearning #learntocode #softwarengineering

🚀 Day 933 of #1000DaysOfCode ✨ Sorting Arrays in JavaScript — Different Types Explained Sorting isn’t always just about numbers in ascending order. In today’s post, I’ve covered sorting arrays in JavaScript for different data types — whether it’s numbers, strings, objects, or more complex structures. The goal is to help you understand how sorting behaves internally and how to customize it properly. If you’ve ever faced unexpected results while using `.sort()`, this post will help you gain clarity and control. 👇 What type of array do you find most challenging to sort? #Day933 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #Next #CodingCommunity

map, filter, reduce ✅ Transform arrays effortlessly with map ✅ Pick only what you need with filter ✅ Summarize data like a champ with reduce Who even needs loops when these exist? Which array function do you swear by? #JavaScript #WebDev #ProgrammingLife #CodeDaily #FrontendDev #SoftwareEngineer #TechLife #CodeNewbie

🚀 Day 67 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects 💻 🔹 What I Worked On: • Iterated through array of objects using for loop • Printed all elements and accessed object properties like loc • Used loop with step increment (i += 2) to print alternate values • Practiced reverse counting using for and while loops • Used forEach() for cleaner array iteration 💡 Key Learning: • Arrays of objects are very common in real-world applications • Loop conditions must be handled carefully (i < length vs <= length) • forEach() is simple and readable for iteration • Multiple ways to loop → choose based on requirement 🔥 Takeaway: 👉 Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step 🚀 #Day67 #JavaScript #Loops #ArrayIteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir

#day53 Headline: 0ms Runtime | Beats 100% of JavaScript Submissions 🚀 Just cleared the "Single Element in a Sorted Array" challenge on LeetCode with $O(\log n)$ time complexity and $O(1)$ space. While a simple XOR approach works in $O(n)$, the real challenge was implementing a binary search that correctly navigates the even/odd index logic to find that one unique element in logarithmic time. There's a specific kind of satisfaction in seeing that "Beats 100%" metric. It's a reminder that in software engineering, the difference between "it works" and "it's optimal" is where the real fun begins. #LeetCode #JavaScript #DataStructures #Algorithms #CodingLife #Optimization #ProblemSolving

🚨 Confused between the Spread (...) and Rest (...) operator in JavaScript? Many developers mix them up. 💡 They share the same syntax but serve completely different purposes depending on where they’re used. 🔹 Spread Operator • Expands elements from arrays or objects • Commonly used for copying, merging, or passing values • Helps maintain immutability in modern JavaScript • Makes code cleaner and easier to read 🔹 Rest Operator • Collects multiple values into a single array • Mostly used in function parameters or destructuring • Useful when working with an unknown number of arguments • Helps manage flexible and dynamic data ⚡ Quick rule many developers follow: • Spread → Expands values • Rest → Collects values 📌 Same syntax. Two powerful JavaScript features. #JavaScript #WebDevelopment #FrontendDevelopment #Coding #LearnToCode #100DaysOfCode

💻 JavaScript Intermediate – Custom map() Function The map() method is widely used to transform arrays. Here’s how you can implement it manually. 📌 Problem: Apply a function to each element of an array and return a new array. function customMap(arr, callback) { let result = []; for (let i = 0; i < arr.length; i++) { result.push(callback(arr[i])); } return result; } let numbers = [1, 2, 3]; let doubled = customMap(numbers, function(num) { return num * 2; }); console.log(doubled); 📤 Output: [2, 4, 6] 📖 Explanation: • map() creates a new array by applying a function to each element. • Here, we manually implemented the same logic using a loop and callback. 💡 Tip: Understanding this helps you grasp how higher-order functions work in JavaScript. #JavaScript #Coding #WebDevelopment #FrontendDevelopment #LearnToCode #ProgrammingTips

Javascript concept: Data Types A small mistake cost me hours debugging. let a = 10; let b = a; b = 20; console.log(a); // 10 But then: let obj1 = { name: "JS" }; let obj2 = obj1; obj2.name = "React"; console.log(obj1.name); // React 💡 Lesson: Primitives → copy by value Objects → copy by reference #JavaScript #WebDevelopment #Frontend #Coding

Day 66 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects🧑🏻💻 - What I Worked On: •Iterated through array of objects using for loop •Printed all elements and accessed object properties like loc •Used loop with step increment (i += 2) to print alternate values •Practiced reverse counting using for and while loops •Used forEach() for cleaner array iteration 💡 Key Learning: •Arrays of objects are very common in real-world applications •Loop conditions must be handled carefully (i < length vs <= length) •forEach() is simple and readable for iteration •Multiple ways to loop → choose based on requirement Takeaway: Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step #Day66 #JavaScript #Loops #Arraylteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir