JavaScript Functions: Expressions & Arrow Functions Explained

Day 5/30 – JavaScript Challenge #30daysOfLeetCode Solved LeetCode 2634: Filter Elements from Array using JavaScript ✅ The solution recreates the behavior of Array.filter by manually iterating through the array and applying a filtering function to each element and its index. Only values that evaluate to truthy are included in the final array, which helped reinforce concepts like callbacks, loops, and truthy vs falsy values in JavaScript. ✅ All test cases passed 📌 Strengthening JavaScript fundamentals by understanding how built-in methods work internally On to the next challenge 💪 #30DaysOfJavaScript #JavaScript #LeetCode #ProblemSolving #LearningInPublic #CodingJourney #WebDevelopment

Day 3/30 – JavaScript Challenge #30daysOfLeetCode Solved LeetCode: To Be Or Not To Be ✅ The solution implements a custom expect function that returns an object with two methods: toBe and notToBe. These methods compare values using strict equality (===) and throw meaningful errors when conditions fail. Closures are used to retain access to the initial value, enabling clean and readable test-like behavior without global variables. ✅ All test cases passed 📌 Learning how testing utilities work internally and strengthening JavaScript fundamentals On to the next problem 💪 #30DaysOfJavaScript #JavaScript #LeetCode #ProblemSolving #LearningInPublic #CodingJourney #WebDevelopment

I’ve started learning JavaScript, and one thing I’m struggling with is this- Should I focus on memorizing syntax or on understanding concepts and looking things up when needed? Sometimes I understand the logic but forget the syntax, and sometimes it’s the opposite. For those who’ve learned JavaScript already, how did you approach this phase? #JavaScript #LearningInPublic #WebDevelopment

Day 4/30 – JavaScript Challenge #30daysOfLeetCode Solved LeetCode 2635: Apply Transform Over Each Element in Array using JavaScript ✅ The solution recreates the behavior of Array.map by iterating through the array and applying a given transformation function to each element along with its index. This helps understand how higher-order functions work internally and reinforces fundamentals like loops, function callbacks, and index-based operations. ✅ All test cases passed 📌 Focusing on mastering core JavaScript concepts without relying on built-in methods On to the next challenge 💪 #30DaysOfJavaScript #JavaScript #LeetCode #ProblemSolving #LearningInPublic #CodingJourney #WebDevelopment

Converting arrays to strings can be a tricky task, especially for beginners 📝. I recall my early days in JavaScript, struggling to turn object arrays into comma-separated strings. After some research, I discovered a few simple methods to achieve this. By utilizing JavaScript's built-in functions, you can easily convert arrays into strings with or without commas. Read more: https://lnkd.in/gb63R9N8 #JavaScript #ProgrammingTips #WebDevelopment

Conditional statements are one of the most important concepts in JavaScript. They allow your code to make decisions based on different conditions using: • if • else if • else From form validation to user authentication, conditional logic exists everywhere. I teach JavaScript concepts daily and apply them using real-world projects on my YouTube channel, Code Hunter Sharath. 🎥 Playlist: 52 Weeks • 52 JavaScript Projects 👍 Follow me for daily JavaScript concepts 🔔 Subscribe to learn by building #JavaScript #LearnJavaScript #WebDevelopment #FrontendDeveloper #Coding

JavaScript doesn’t do multiple things at the same time — it does many things efficiently. 🔹 Concurrency → managing multiple tasks 🔹 Parallelism → executing multiple tasks simultaneously Thanks to the event loop, JavaScript stays non-blocking while running on a single thread. Save this 📌 if you’re learning JavaScript! #JavaScript #Concurrency #AsynchronousProgramming #WebDevelopment #SoftwareEngineering

🚀 What is Hoisting in JavaScript? Explained Simply Many beginners struggle with hoisting in JavaScript—especially why var, let, and const behave so differently. This short tutorial breaks it down in a clear, practical way. In this video, you’ll learn: ✔ What hoisting actually means ✔ How JavaScript handles memory creation and execution phases ✔ Why var is accessible before declaration ✔ Why let and const throw ReferenceError (Temporal Dead Zone) ✔ Common interview questions with real code examples If you’re starting with JavaScript or preparing for frontend interviews, this will clear up one of the most confusing core concepts. 🎥 Watch here: https://lnkd.in/e_didKwb Let me know in the comments if you’d like more beginner-friendly JavaScript topics covered next. #JavaScript #WebDevelopment #Frontend #CodingForBeginners #Hoisting #LearnJavaScript #Programming #100DaysOfCode Ranjna Devi Anil Kumar W3Schools.com JavaScript Developer React

🚀 Hello Everyone, Day 2 – 15 Days of JavaScript Challenge Today I officially started my 15 Days JavaScript Challenge 🎯 📌 Day 2 Focus: 🔍 What you learned today ✔ Hoisting – variable declarations move to the top ✔ Data types & typeof ✔ Truthy & Falsy values ✔ Type conversion (string ↔ number) ✔ Loose (==) vs Strict (===) equality ✔ NaN and how to check it Building strong fundamentals step by step 💻 Consistency is the key to growth 🔥 👉 Day 1/15 Completed #15DaysOfJavaScript #JavaScript #WebDevelopment #CodingChallenge #DailyLearning #DeveloperJourney #cetpa

Day 7/30 – JavaScript Challenge 🚀 Built a Random Quote Generator using JavaScript 💬   On each button click, a random quote is selected from an array and displayed dynamically. GitHub: https://lnkd.in/djJ-NtGi #JavaScript #WebDevelopment #LearningInPublic #30DaysOfCode