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How can you measure the time taken by an asynchronous function using console methods in Node.js?

hard📝 Application Q9 of 15
Node.js - Debugging and Profiling
How can you measure the time taken by an asynchronous function using console methods in Node.js?
AUse console.count() to measure time taken
BCall console.time('label') before async call and console.timeEnd('label') inside async callback or after await
CCall console.timeEnd('label') before async call and console.time('label') after async call
DUse console.group() to measure time taken
Step-by-Step Solution
Solution:

  1. Step 1: Understand timing async functions

    Start timer before async call, stop timer after async completes to measure elapsed time.

  2. Step 2: Use console.time and console.timeEnd correctly

    console.time('label') starts timer; console.timeEnd('label') stops and logs elapsed time.

  3. Final Answer:

    Call console.time('label') before async call and console.timeEnd('label') inside async callback or after await -> Option B

  4. Quick Check:

    Start timer before, end timer after async completes [OK]
Quick Trick: Start timer before async; end timer after completion [OK]
Common Mistakes:
  • Reversing time and timeEnd calls
  • Using count or group for timing
  • Stopping timer before async finishes

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