NodeJS Program to Async/Await Try Catch with Explanation
NodeJS
Medium
Async & Event Loop
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1 min read
86 words
This problem helps you practice core NodeJS fundamentals in a practical way. It builds intuition around async, catch, error. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Call an async function that can throw and handle it cleanly.
Input Format
No input.
Output Format
Print OK or ERROR.
Constraints
Return a rejected promise and catch it.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
async function risky() {
throw new Error('meetcode failed');
}
(async () => {
try {
await risky();
console.log('OK');
} catch (e) {
console.log('ERROR');
}
})();
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
Call an async function that can throw and handle it cleanly.
Input / Output
Output
Print OK or ERROR.
Constraints
Return a rejected promise and catch it.
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 risky() {
throw new Error('meetcode failed');
}
(async () => {
try {
await risky();
console.log('OK');
} catch (e) {
console.log('ERROR');
}
})();
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