2619. Get Last Element from Array in JavaScript

Day 22 of 30 Days of JavaScript 🚀

Today’s topic: Extending JavaScript Arrays with a custom method – .last()! 🧠

📌 What You’ll Learn:
✅ How to extend built-in JavaScript prototypes
✅ Safely access the last item in an array
✅ Handle edge cases like empty arrays

🔗 LeetCode Problem:

💡 Real-life use: Often needed in UI apps, calculations, or data pipelines where the latest value matters!

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