feat: add jaw-dropping JS interview questions

Author: manivardhanreddythalla2007

jaw-dropping-questions.md

@@ -0,0 +1,24 @@
+cat > jaw-dropping-questions.md << 'EOF'
+
+cat > jaw-dropping-questions.md << 'EOF'
+# Jaw-Dropping JavaScript Interview Questions
+
+Here are some advanced and surprising JavaScript interview questions I recently encountered.
+
+## 1. Why does [] == ![] evaluate to true?
+Answer: Because [] becomes "", ![] becomes false → "" == false → true.
+
+## 2. What is event loop starvation?
+Answer: When microtasks continuously run and block macrotasks from executing.
+
+## 3. Difference between microtask queue and macrotask queue?
+Answer: Microtasks run immediately after current execution; macrotasks run in next event loop step.
+
+## 4. Why is typeof null === "object"?
+Answer: Legacy bug from the first JS implementation; null was represented as a null pointer.
+
+## 5. What happens when you delete an array index?
+Answer: It leaves a hole (empty slot), does NOT reindex the array.
+
+## 6. Explain Temporal Dead Zone with an example.
+Answer: A period between variable creation and initialization where using `let`/`const` throws ReferenceError.