Lesson 10: Mastering JavaScript Null and Undefined with challenges!

Apr 15, 2025 · 4 min read · 🔍 null vs undefined – Deep Dive ✅ Quick Overview Table Featurenullundefined Typeobject (bug!)undefined IntentIntentional absenceValue not yet assigned Default by JS?NoYes (automatically by JS engine) Common UseEmpty, cleared, or missing va...