LeetCode #28: Find String Index in JavaScript

🚀 JavaScript LeetCode Challenge 🧩 Problem: 2634 – Filter Elements from Array Today I learned how filtering works behind the scenes in JavaScript without the filter function 👨💻 This problem helps build a strong foundation for: ✔ Callbacks ✔ Higher-order functions ✔ Array manipulation Consistency > Motivation 💯   One problem a day makes you ready 💪 🎥 Full live solution on YouTube (https://lnkd.in/g4xTBvm8) #JavaScript #LeetCode #DSA #FrontendDeveloper #CodingLife #100DaysOfCode #javascriptdeveloper #leetcodechallenge #webdeveloper #frontendinterview #codingdaily #programminglife

🚀 LeetCode Practice Update Solved LeetCode #58 – Length of Last Word. This problem reinforced the importance of: • Careful string traversal • Trimming extra spaces • Handling edge cases cleanly Simple problem, but great for strengthening fundamentals in JavaScript. Consistency is the key 🔑 #LeetCode #DSA #JavaScript #ProblemSolving #CodingJourney #FrontendDeveloper

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

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

🚀 LeetCode Practice Update Solved LeetCode #66 – Plus One. This problem was a good reminder of how small edge cases matter, especially: • Handling carry correctly • Working with arrays as numbers • Writing clean and efficient logic Strengthening fundamentals step by step using JavaScript. #LeetCode #DSA #JavaScript #ProblemSolving #CodingJourney #FrontendDeveloper

✅ Solved LeetCode: First Bad Version (278) Used a clean binary search approach in JavaScript to find the first bad version efficiently. - Narrowed the search space using left & right pointers - Checked mid with isBadVersion() - Eliminated unnecessary versions on each step ⏱ Time: O(log n) 📦 Space: O(1) Simple, optimal, and efficient! 🚀 #LeetCode #BinarySearch #JavaScript #DSA #Coding

JavaScript tip that actually matters 👇 <async/await> doesn’t make code synchronous. It only makes asynchronous code easier to reason about. The event loop, microtasks, and call stack still behave the same — which is why blocking the main thread or misusing promises can still hurt performance. Clean syntax ≠ clean execution. Understanding how JS runs is what separates reliable code from flaky code. #JavaScript #WebPerformance #FrontendEngineering #WebDev #Learning

DSA Practice with JavaScript | LeetCode #443 – String Compression Today I solved LeetCode Problem 443: String Compression while practicing DSA using JavaScript. 🔍 What I learned from this problem: How to use two pointers (i & j) to group consecutive characters Why handling the last group (j <= length) is important Understanding in-place modification instead of returning a new array Debugging issues like infinite loops and Time Limit Exceeded (TLE) Converting a compressed string back into the original array as required by LeetCode 💡 Key takeaway: Some problems don’t care about what you return as an array — they only validate how you modify the input and the length you return. This problem really helped me strengthen my understanding of loops, edge cases, and pointer logic. 📌 Practicing DSA consistently with JavaScript 📈 Learning by debugging and improving step by step #LeetCode #443 #DSA #JavaScript #ProblemSolving #CodingJourney #LearningInPublic #WebDevelopment

Tiny JavaScript methods, massive clarity. Today’s snippet breaks down how join, substring, slice, and splice actually behave — same syntax, very different output. If you’ve ever been confused why slice doesn’t modify the array but splice does, this one is for you. Clean examples, zero fluff, straight logic. Save this for revision and share it with someone learning JavaScript fundamentals. Follow for more daily JS clarity and real interview-level concepts. #JavaScript #JSBasics #FrontendDevelopment #WebDeveloper #CodingSnippets #LearnJavaScript #DeveloperTips #ProgrammingLogic #CodeDaily