JavaScript Fundamentals & Problem Solving with LeetCode & HackerRank

🚀 Learning Update | Async JavaScript & Backend Fundamentals Here’s what I worked on today: 🔹 DSA Practice Solved 2 medium-level LeetCode problems focused on callbacks and async patterns. 🔹 Core JavaScript Concepts Deep dived into: • Promise chaining • Async/Await • Event Loop (manually visualized execution flow) 🔹 Hands-on with Node.js Built a script to fetch and process data from a public API with proper error handling (try/catch). 🔹 HackerRank Progress Completed 5 Node.js challenges, strengthening understanding of non-blocking I/O ⚡ 🔹 Communication & Presentation Recorded two Loom videos: • Self-introduction • Project explanation Learning, building, and improving every single day. #JavaScript #NodeJS #AsyncProgramming #DSA #LearningInPublic #GrowthMindset

Day 13 of My JavaScript Journey 🚀 Today’s lesson was different and very important. I learned how to effectively use tools like Google and Stack Overflow to solve problems, and I was introduced to debugging. Debugging is the process of identifying and fixing errors (bugs) in code. The process can be summarized as: • Find the problem • Fix the issue • Prevent it from happening again I also learned that bugs are a normal part of programming every developer deals with them. One key insight: Being a good developer is not about knowing everything, but about knowing how to find solutions. Key takeaway: Problem-solving and debugging are core skills in programming. I’m documenting my journey daily as I grow in JavaScript. #JavaScript #WebDevelopment #LearningInPublic #100DaysOfCode

Master JavaScript Fundamentals with This Handy Guide! ➤ Boost Your Coding Skills ↳ A comprehensive PDF covering essential JavaScript concepts. ➤ Topics Covered ↳ ✅ Arrays ↳ ✅ Objects ↳ ✅ Scope ↳ ✅ Dates ↳ ✅ Events ↳ ✅ Error Handling ↳ ✅ Async/Await ➤ Join me for exciting insights, practical tips, and the latest trends tech updates and technology Level up your skills and practices Start now at w3schools.com JavaScript Mastery #JavaScript #WebDevelopment #CodingTips #FrontendDevelopment

🚀 Functions changed how I think about writing JavaScript code. While learning JavaScript, I realized something simple but powerful: 👉 Functions prevent repetition and make code reusable. Today I explored functions in depth and covered: • Different ways to create functions • Modern arrow functions • Rest vs Spread operators and how they differ • Callback functions and how functions can be passed as arguments One thing that stood out to me is how functions are not just reusable blocks — they are first-class citizens in JavaScript, meaning they can be stored, passed, and returned like any other value. This opens the door to more advanced patterns and cleaner code structure. Detailed Notes below provided by CoderArmy Channel. Course Instructor: Rohit Negi | Youtube Channel: Coder Army #JavaScript #WebDevelopment #BuildInPublic #FullStackDevelopment

Day 07 of My JavaScript Learning 👉 Finding the largest among three numbers How to compare multiple values using if-else Writing clean and readable conditions Converting logic into a reusable function // Find the largest among 3 numbers let firstNum = 5; let secondNum = 10; let thirdNum = 2; if (firstNum >= secondNum && firstNum >= thirdNum) { console.log(firstNum); } else if (secondNum >= firstNum && secondNum >= thirdNum) { console.log(secondNum); } else { console.log(thirdNum); } 🔁 Making it reusable with a function: let largestInFunction = function(firstNum, secondNum, thirdNum) { if (firstNum >= secondNum && firstNum >= thirdNum) { return firstNum; } else if (secondNum >= firstNum && secondNum >= thirdNum) { return secondNum; } else { return thirdNum; } } console.log(largestInFunction(3, 1, 4)); 🌱 My takeaway: Even simple problems help build strong fundamentals. The goal is not just solving — but understanding the logic behind it. #Day07 #JavaScript #LearningJourney #FrontendDeveloper #CodingPractice

🚀 Day 2 of My Coding Journey Today I practiced an important concept: Reversing a String and a Number using Functions in JavaScript 🔹 What I learned: How to reverse a string using a loop How to reverse a number using mathematical logic Also explored shortcut methods using built-in functions 💻 Example: Reversing a String function reverseString(str) { let reversed = ""; for (let i = str.length - 1; i >= 0; i--) { reversed += str[i]; } return reversed; } Reversing a Number function reverseNumber(num) { let reversed = 0; while (num > 0) { let digit = num % 10; reversed = reversed * 10 + digit; num = Math.floor(num / 10); } return reversed; } 📌 Key Takeaway: Understanding logic is more important than just using built-in methods. I’m improving step by step every day 💪 #Day2 #JavaScript #CodingJourney #WebDevelopment #90DaysOfCode #Learning #FrontendDeveloper

Most beginners learn JavaScript… but don’t truly understand functions. They copy code. Call functions. Get outputs. It works — until logic gets complex. Then the real problems start: Repeated code everywhere. Messy logic flow. Hard-to-maintain projects. Confusing debugging. In 2026, JavaScript isn’t about writing more code. It’s about writing smarter, reusable logic. Functions help you: • Avoid repeating same code • Break problems into smaller parts • Write clean and readable logic • Build scalable applications • Improve debugging and structure Because great developers don’t just code — they organize logic efficiently. Curious — are you writing functions or just repeating code? #JavaScript #WebDevelopment #Coding #Programming #FrontendDevelopment #Functions #DeveloperLife #LearnToCode

Most people “learn” JavaScript. Few actually understand it. After completing “Namaste JavaScript” by Akshay Saini 🚀, I realised : 👉 Hoisting isn’t magic 👉 Closures aren’t confusing 👉 The Event Loop isn’t scary It’s all about understanding the engine behind the code. This course helped me shift from: ❌ Copying code ➡️ Thinking like a developer Now the real journey begins — building, failing, and improving. If you're learning JavaScript, don’t rush. Depth > speed. #JavaScript #Programming #LearningInPublic #WebDev #AkshaySaini

🚀 Building Strong Foundations in JavaScript 💻✨ ✨Continuing my journey of improving core JavaScript skills through hands-on coding 👇 🔹 Loops Practice ✅ Printed numbers from 1–50 using: • for loop • while loop • do...while loop 🔹 Logic Building ✅ Generated multiplication table dynamically using user input 🔹 Iteration Techniques ✅ Used for...of for arrays and for...in for objects 🔹 Functions Practice ✅ Built a function to check Prime or Non-Prime numbers ✅ Implemented a Callback Function to calculate square of a number ✅ Practiced IIFE (Immediately Invoked Function Expression) to print today’s date 💡 Key Learnings: • Better understanding of loops and iteration • Clear idea of callback & higher-order functions • Debugged a real issue with IIFE and semicolons 😄 📌 Step by step, improving logic and confidence in JavaScript! #JavaScript #CodingJourney #LearningByDoing #FrontendDeveloper #WebDevelopment #KeepGrowing 🚀

🚀 #Day49 of #100DaysOfCoding Today, I built a Factorial Calculator using HTML, CSS, and JavaScript. In this project, I implemented logic to calculate the factorial of a number using a loop, which helped me strengthen my understanding of for loops, variables, user input handling, and DOM manipulation in JavaScript. This is an important concept for improving logical thinking and problem-solving skills in programming. ✨ Key learnings from today’s project: • Taking numeric input from users • Applying for loop logic to calculate factorial • Understanding factorial concept step by step • Displaying dynamic results using innerText • Strengthening JavaScript logic-building skills • Creating a clean and simple UI using HTML & CSS Projects like this are helping me improve my core programming logic and confidence in JavaScript fundamentals day by day. Grateful for the continuous guidance and support from Ritendra Gour Sir and Avinash Gour Sir at Code Of School Institute 🙏 Excited to continue this learning journey and build more logic-based projects ahead! 💻🔥 #Day49 #100DaysOfCoding #JavaScript #FrontendDevelopment #HTML #CSS #ProgrammingLogic #WebDevelopment #LearningJourney #CodeOfSchool