NodeJS Program to JSON Output Mode with Explanation
NodeJS
Medium
CLI Tools & Debugging
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1 min read
82 words
This problem helps you practice core NodeJS fundamentals in a practical way. It builds intuition around json, text, mode. Let’s break it down step by step so you can implement it confidently.
Problem Statement
If --json flag is present, print output as JSON instead of text.
Input Format
No input.
Output Format
Print JSON or text.
Constraints
Use process.argv.includes.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
const json = process.argv.includes('--json');
const data = { site: 'meetcode', ok: true };
if (json) console.log(JSON.stringify(data));
else console.log('meetcode ok');
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
If --json flag is present, print output as JSON instead of text.
Input / Output
Output
Print JSON or text.
Constraints
Use process.argv.includes.
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
const json = process.argv.includes('--json');
const data = { site: 'meetcode', ok: true };
if (json) console.log(JSON.stringify(data));
else console.log('meetcode ok');
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