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JavaScript Coding Challenge: Find the Longest Vowel Substring (Easy Logic)

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Nov 29, 2025
8:37

In this JavaScript coding exercise, we solve a popular interview question: “How do you find the longest substring of vowels in a given string?” Example: Input: "beautiful" Output: "eau" In this video, I explain: ✔ How to iterate through a string ✔ How to check vowels in JavaScript ✔ How to build logic step-by-step ✔ How to solve interview-style string questions This series is perfect for: – JavaScript beginners – Coding interview preparation – Logic-building practice – Daily coding exercises

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JavaScript Coding Challenge: Find the Longest Vowel Substring (Easy Logic) | NatokHD