How to memoize a function with JavaScript and LeetCode

🚀 Day 81 of #100DaysOfCode Today I learned how to create object literals in JavaScript. An object literal lets you store related data as key-value pairs inside curly braces. For example: const car = { brand: "Toyota", year: 2020, color: "red" }; This way, you can easily organize, access, and update complex data as one unit. Object literals are foundational for structuring real-world information in your programs. #JavaScript #ObjectLiterals #Programming #100DaysOfCode

Day 26 – Understanding Scope, Closure & Higher-Order Functions in JavaScript Today I learned about three powerful concepts in JavaScript: Scope, Closure, and Higher-Order Functions. These concepts helped me understand how data access and function behavior actually work behind the scenes. The lecture was deeply insightful and covered ideas that are rarely explained this clearly. Thanks to Rohit Negi for the guidance. #coderArmy #JavaScript #WebDevelopment #Frontend #LearningInPublic #Programming #tech #coding #GrowthJourney

Day 15 of #30DaysOfJavaScript on LeetCode Today's Challenge: 2725 — Interval Cancellation This problem focused on mastering repeated asynchronous execution in JavaScript — specifically, how to repeatedly run a function using setInterval() and stop it with clearInterval(). Here’s my solution 👇 var cancellable = function(fn, args, t) { fn(...args); let timer = setInterval(() => fn(...args), t); let cancelFn = () => clearInterval(timer); return cancelFn; }; This exercise helped me understand how interval-based scheduling works and how to control execution flow by canceling ongoing intervals a common pattern in real-world applications like periodic data fetching or live updates. Try it out here: https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #AsyncAwait #Promises #30DaysOfCode #Programming #Developers #LearningJourney

Day 14 of #30DaysOfJavaScript on LeetCode Today's Challenge: 2715 — Timeout Cancellation This problem focused on controlling asynchronous behavior — specifically, learning how to cancel a scheduled function call using setTimeout() and clearTimeout(). Here’s my solution 👇 var cancellable = function(fn, args, t) { let time = setTimeout(() => { fn(...args) }, t) return function() { clearTimeout(time) } } The challenge helped me understand how JavaScript manages timers and how we can cancel pending asynchronous tasks before they execute. Try it out here: https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #AsyncAwait #Promises #30DaysOfCode #Developers #Programming #LearningJourney

Unleash the Potential of Array Methods!** Stop writing verbose loops! JavaScript Array methods like `map`, `filter`, and `reduce` are your secret weapons. Write cleaner, more readable, & more performant code. They're not just shorter; they're a whole new level of elegance. What's one Array method that changed the way YOU code? Share your experiences! 👇 #javascript #arrays #codingtips #webdev #programming

⚡ Day 34 | Mastering Operators & Conditionals in JavaScript Today’s session (Lec-41) was packed with logic and power! 🔥 I explored how JavaScript makes decisions and performs calculations — the true backbone of programming. 💡 Key Highlights: ● Arithmetic, Comparison, Logical & Bitwise Operators ● Short-circuit evaluation & ternary conditions ● if, else if, and switch statements in real-world logic These concepts make code think — transforming simple scripts into intelligent, responsive programs. 🙏 Thanks to @Love for simplifying complex logic beautifully! ✅ Day 35 complete — 46 more to go 🚀 🔗 GitHub Repo: https://lnkd.in/dtdU9-zZ #JavaScript #WebDevelopment #Frontend #CodingJourney #LearnWithMe #Programming #LoveForCoding ❤️

Day 9 of #30DaysOfJavaScript on LeetCode Today's challenge: 2703 — Return Length of Arguments Passed The task was to write a function that returns the number of arguments passed to it — a simple yet elegant problem to explore rest parameters in JavaScript. Here’s my solution 👇 var argumentsLength = function(...args) { return args.length; }; It’s a short problem but a great reminder that even small concepts like this are essential for mastering function flexibility in JavaScript! Try it out here : https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #LearningJourney #30DaysOfCode #Functions #RestParameters #Programming

Day 7 of #30DaysOfJavaScript on LeetCode Today's challenge: 2626 — Array Reduce Transformation The task was to implement a custom reduce() function that applies a reducer function (fn) on each element of an array, accumulating the result — just like the built-in Array.reduce() method, but without using it. Here’s my solution 👇 var reduce = function(nums, fn, init) { let ans = init; for (let i = 0; i < nums.length; i++) { ans = fn(ans, nums[i]); } return ans; }; This challenge helped me understand how accumulators work and how values are carried forward during iteration. It deepened my appreciation for how methods like reduce() process arrays step by step turning a list of elements into a single meaningful result. If you’d like to give it a shot, check it out here: https://lnkd.in/g6WC5mu7 #JavaScript #LeetCode #CodingChallenge #LearningJourney #30DaysOfCode #Functions #Callbacks #Arrays #Reduce #Programming

🔁 JavaScript Loops — They Literally Put Me in a Loop 😅 Started learning loops today, and wow… they’re the real deal when it comes to writing less code that does more! ⚙️ Loops basically say: > “Why write it ten times when I can do it for you?” 😎 Here’s what I explored 👇 🔹 for loop — when you know exactly how many times to run 🔹 while loop — keeps going as long as the condition’s true 😆 🔹 do...while — runs at least once, no matter what 🔹 for...of / for...in — the cleanest way to loop through arrays and objects It’s crazy how something so simple can automate so much logic 🔄 Feeling one step closer to thinking like a developer now 💪 Next stop → Functions, where the real magic begins! ✨ #JavaScript #WebDevelopment #Frontend #CodingJourney #Loops #Programming #LearningInPublic #DeveloperLife #CleanCode #100DaysOfCode

Day 3 – JavaScript Loops Practice In this task, I practiced different types of JavaScript loops — for, while, do...while, and for...of — to understand how iteration works in programming. I applied loops to solve small problems like counting numbers, iterating over arrays, and displaying patterns in the console. This practice improved my logic-building skills, debugging techniques, and understanding of flow control in JavaScript. Key Learning Areas: Difference between for, while, and do...while loops Using loops with arrays and objects Avoiding infinite loops and understanding loop conditions Real-time testing using console.log() #JavaScript #WebDevelopment #FrontendLearning #CodingChallenge #Loops #CodingJourney #WomenInTech #100DaysOfCode