Node.js - Timers and Scheduling
Which of the following is the correct syntax to schedule a function to run after 0 milliseconds in Node.js?
Which of the following is the correct syntax to schedule a function to run after 0 milliseconds in Node.js?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Check function syntax for setTimeout
The first argument must be a function, not the result of a function call.Step 2: Analyze each option
setTimeout(() => console.log('Hi'), 0); passes a function that logs 'Hi' after 0 ms delay correctly. setTimeout(console.log('Hi'), 0); calls console.log immediately and passes its result (undefined). setTimeout(0, () => console.log('Hi')); passes 0 (number) as first argument instead of a function, causing a TypeError on execution. setTimeout(console.log('Hi')) calls console.log immediately without delay argument.Final Answer:
setTimeout(() => console.log('Hi'), 0); -> Option DQuick Check:
Function as first argument = setTimeout(() => console.log('Hi'), 0); [OK]
Quick Trick: Pass a function, not a function call, to setTimeout [OK]
Common Mistakes:
- Calling the function immediately inside setTimeout
- Omitting the delay argument
- Passing non-function as first argument
Master "Timers and Scheduling" in Node.js
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Node.js Quizzes