NodeJS Program to Fetch With Timeout with Explanation
NodeJS
Hard
HTTP & APIs
30 views
1 min read
78 words
This problem helps you practice core NodeJS fundamentals in a practical way. It builds intuition around fetch, timeout, use. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Use AbortController to timeout a fetch call.
Input Format
No input.
Output Format
Print TIMEOUT or OK.
Constraints
Use Node fetch when available.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
async function run() {
const ac = new AbortController();
const id = setTimeout(() => ac.abort(), 30);
try {
await fetch('https://example.com', { signal: ac.signal });
console.log('OK');
} catch (e) {
console.log('TIMEOUT');
} finally {
clearTimeout(id);
}
}
run();
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
Use AbortController to timeout a fetch call.
Input / Output
Output
Print TIMEOUT or OK.
Constraints
Use Node fetch when available.
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
async function run() {
const ac = new AbortController();
const id = setTimeout(() => ac.abort(), 30);
try {
await fetch('https://example.com', { signal: ac.signal });
console.log('OK');
} catch (e) {
console.log('TIMEOUT');
} finally {
clearTimeout(id);
}
}
run();
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