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Which of the following is the correct syntax to schedule a function to run after 100 milliseconds in Node.js?

easy📝 Syntax Q3 of 15
Node.js - Timers and Scheduling
Which of the following is the correct syntax to schedule a function to run after 100 milliseconds in Node.js?
AsetInterval(() => { /* code */ }, 100);
BsetTimeout(() => { /* code */ }, 100);
CsetTimeout(100, () => { /* code */ });
DsetImmediate(() => { /* code */ }, 100);
Step-by-Step Solution
Solution:

  1. Step 1: Recall setTimeout syntax

    The correct syntax is setTimeout(callback, delay), where delay is in milliseconds.

  2. Step 2: Identify correct option

    setTimeout(() => { /* code */ }, 100); matches the correct syntax with callback first, then delay.

  3. Final Answer:

    setTimeout(() => { /* code */ }, 100); -> Option B

  4. Quick Check:

    setTimeout(callback, delay) syntax [OK]
Quick Trick: setTimeout(callback, delay) always callback first [OK]
Common Mistakes:
  • Swapping arguments order
  • Using setInterval instead of setTimeout
  • Passing delay to setImmediate

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