Exercise 13: Check if Object is Empty
Problem Statement
Function `isEmpty(obj)` banao jo check kare ki object empty hai ya nahi.
Example: isEmpty({}) => true, isEmpty({a: 1}) => false
Sample Output:
isEmpty({}) => true
isEmpty({a: 1}) => false
isEmpty(null) => trueSolution
const isEmpty = (obj) => {
if (obj == null || typeof obj !== "object") return true;
return Object.keys(obj).length === 0;
};Explanation
Overall Goal:
- Object empty hai ya nahi check karna.
Real world:
- Validation: empty object checks.
- Data processing: empty data handling.