Solution:Step 1: Group callbacks by typeAll process.nextTick callbacks run before setImmediate callbacks.Step 2: Maintain order within groupsprocess.nextTick callbacks run in the order they were scheduled: 'A' then 'C'. Then setImmediate callbacks run in order: 'B' then 'D'.Final Answer:A, C, B, D -

[Solved] Consider this code: process.nextTick(() => console.log('A')); setImmediate(() => console.log('B')); process.nextTick(() => console.log('C'));... What is the correct order of output? | Node.js

Node.js - Timers and Scheduling

Consider this code:

process.nextTick(() => console.log('A'));
setImmediate(() => console.log('B'));
process.nextTick(() => console.log('C'));
setImmediate(() => console.log('D'));

What is the correct order of output?

AA, C, B, D

BB, D, A, C

CA, B, C, D

DC, A, D, B

Step-by-Step Solution

Solution:

Step 1: Group callbacks by type
All process.nextTick callbacks run before setImmediate callbacks.
Step 2: Maintain order within groups
process.nextTick callbacks run in the order they were scheduled: 'A' then 'C'. Then setImmediate callbacks run in order: 'B' then 'D'.
Final Answer:
A, C, B, D -> Option A
Quick Check:
NextTick then Immediate order = B [OK]

Quick Trick: NextTick callbacks run before all setImmediate callbacks [OK]

Common Mistakes:

Mixing the order of nextTick callbacks
Assuming setImmediate runs first
Ignoring callback scheduling order

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More Node.js Quizzes

Consider this code:

Step 1: Group callbacks by type

Step 2: Maintain order within groups

Final Answer:

Quick Check:

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