Promise Chains 🤯Same Time or Different Order? #coding #frontendcourse #python #codeprep #jsinterview

🤔 What will be the output of this code?

Options:
A) A B C D
B) A C B D
C) C D A B
D) B D A C

👇 Correct Answer:
👉 B) A C B D

💡 Explanation:
👉 Tick 1 (Microtask Queue):

* First .then() of both Promises run → A, C

👉 Tick 2 (Next Microtasks):

* Chained .then() run → B, D

🎯 Final Output:
A
C
B
D

🚀 Key Insight:
👉 Each .then() schedules a NEW microtask
👉 Promise chains don’t execute fully in one go — they interleave!

📌 Advanced concept asked in JS interviews

#javascript #eventloop #promises #microtask #codinginterview
#javascript #eventloop #promises #microtask #asyncjavascript #jsinterview #webdev #frontend #coding #learnjavascript #developer #tech #advancedjavascript #shorts

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