NodeJS Program to Custom Delay Function with Explanation
NodeJS
Easy
Async & Event Loop
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1 min read
80 words
This problem helps you practice core NodeJS fundamentals in a practical way. It builds intuition around delay, promise, use. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Create a delay(ms) promise and use it with await.
Input Format
No input.
Output Format
Print DONE.
Constraints
Use setTimeout wrapped in Promise.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
function delay(ms) {
return new Promise((resolve) => setTimeout(resolve, ms));
}
(async () => {
await delay(30);
console.log('DONE');
})();
Output Example
No sample I/O is provided for this question.
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Create a delay(ms) promise and use it with await.
Input / Output
Constraints
Use setTimeout wrapped in Promise.
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
function delay(ms) {
return new Promise((resolve) => setTimeout(resolve, ms));
}
(async () => {
await delay(30);
console.log('DONE');
})();
Solutions (0)
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