Exercise 15: Filter Object by Condition
Problem Statement
Function `filterObject(obj, fn)` banao jo object ke entries ko condition ke basis par filter kare.
Example: filterObject({a: 1, b: 2, c: 3}, (v, k) => v > 1) => {b: 2, c: 3}
Sample Output:
filterObject({a: 1, b: 2, c: 3}, (v, k) => v > 1) => {b: 2, c: 3}
filterObject({x: "a", y: "b"}, (v, k) => k === "x") => {x: "a"}Solution
const filterObject = (obj, fn) => {
return Object.keys(obj).reduce((acc, key) => {
if (fn(obj[key], key)) acc[key] = obj[key];
return acc;
}, {});
};Explanation
Overall Goal:
- Object entries ko condition ke basis par filter karna.
Real world:
- Data filtering: conditional filtering.
- Object processing: entry filtering.