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Which event should you listen to in Node.js to get the exit code of a child process?

easy📝 Conceptual Q2 of 15
Node.js - Child Processes
Which event should you listen to in Node.js to get the exit code of a child process?
Aclose
Berror
Cexit
Ddisconnect
Step-by-Step Solution
Solution:

  1. Step 1: Identify events emitted by child processes

    Node.js child processes emit several events including 'error', 'exit', 'close', and 'disconnect'.

  2. Step 2: Determine which event provides exit code

    The 'exit' event provides the exit code and signal when the process ends.

  3. Final Answer:

    The 'exit' event -> Option C

  4. Quick Check:

    Exit code event = 'exit' [OK]
Quick Trick: Use 'exit' event to get exit code from child process [OK]
Common Mistakes:
  • Using 'error' event to get exit code
  • Confusing 'close' event with 'exit'
  • Listening to 'disconnect' for exit code

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