How to Choose Between var, let, and const in JavaScript

🚀 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

Today I explored some core JavaScript concepts that make coding smarter and cleaner. I learned how operators, conditions, and loops work together to build logic and avoid repeating code. 🔹 Key Learnings: • Used arithmetic, logical & ternary operators. • Practiced if-else and switch. • Explored for, while, do...while loops. • Learned for...in, for...of, and forEach. Step by step, getting better at coding! 🚀 #JavaScript #WebDevelopment #CodingJourney #Frontend #Learning #Tech #Programming

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 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

📘 Chapter 15: Arrays in JavaScript 💻 In this chapter, we explore one of the most essential concepts in JavaScript — the Array 🔢 Arrays allow us to store and manage multiple values in a single variable — making our code cleaner, faster, and more dynamic. ✨ What You’ll Learn: ✅ How to create and access arrays ✅ Add or remove elements with .push(), .pop(), .shift(), .unshift() ✅ Find the length of an array ✅ Loop through arrays using for and forEach() 🚀 Keep learning, keep coding! #JavaScript #WebDevelopment #Coding #Programming #FrontendDevelopment #LearnToCode #100DaysOfCode #CodeNewbie #SoftwareEngineer #Developers #TechCommunity #ArrayInJavaScript #WebDevJourney #CodingLife #JSRoadmap #FullStackDevelopment #TechLearning

Variables, Arrays & Objects in javascript In JavaScript, everything starts with these three building blocks => Variables – Store single values that can change during program execution. Example: let age = 25; => Arrays – Hold multiple values of different data types in a single structure. Example: let data = [42, 'hello', true, null]; => Objects – Represent real-world entities using key–value pairs. Example: let person = { name: 'John', age: 30 }; #JavaScript #CodingBasics #WebDevelopment #Programming #LearningEveryday #TechJourney 10000 Coders

JavaScript Quirks Every Developer Should Know Understanding these "funny" behaviors isn't just entertaining it's essential for writing better code: - - Why [] == ![] is true (type coercion) - Why 0.1 + 0.2 ≠ 0.3 (floating-point precision) - Why sort() doesn't work as expected (alphabetical default) These quirks teach us valuable lessons about JavaScript's underlying mechanics. What JS behavior caught YOU off guard when you first started? Share your stories! #JavaScript #WebDevelopment #TechEducation #LearnToCode #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

When working with functions in TypeScript, you might sometimes need the type of their parameters without rewriting them manually. That’s where the built-in 'Parameters<T>' utility type comes in. It extracts a tuple type of all the parameters from a given function type. This is especially useful when - - You want to reuse a function’s parameter types elsewhere. - You’re writing higher-order functions or wrappers. - You want to ensure your code stays in sync when parameter types change. Parameters<T> pairs beautifully with 'typeof,' since you can pass an actual function to it and infer its parameter types automatically. So instead of writing parameter types manually (and risking inconsistencies), let TypeScript infer them for you. #TypeScript #JavaScript #Programming #WebDevelopment #Coding #Learning

🚀 Cloning in JavaScript using `Object.assign()` (Oop Concepts) JavaScript's `Object.assign()` method can be used for shallow copying of objects. It copies the values of all enumerable own properties from one or more source objects to a target object. However, it only performs a shallow copy, so if the object contains nested objects or arrays, changes to those nested structures in the cloned object will affect the original object. Understanding this limitation is crucial for avoiding unintended side effects. #oopconcepts #programming #coding #tech #learning #professional #career #development