Pagination Slice

Hooks Logicmedium

Course · Section 17: Modern JavaScript Development: Modules, Tooling, and Functional · Lecture 294: Declarative and Functional JavaScript Principles

A pagination hook returns just the rows for the current page. Implement `paginate(items, page, perPage)` returning the slice of `items` for the 1-based `page`. Pages past the end return an empty array.

Sample tests

Input: paginate([1,2,3,4,5], 1, 2)

Output: [1,2]

Input: paginate([1,2,3,4,5], 2, 2)

Output: [3,4]

+ 2 hidden tests run on Submit.

Hints

Common pitfalls

Using page directly (without subtracting 1) skips the first page of results.
Manually looping and risking index errors when slice handles the bounds for you.

Learning resources

React: Built-in Hooks

Approach & explanation (try first)

Each page is a contiguous window of size perPage. The start index is (page - 1) * perPage, and slice returns that window — automatically returning an empty array when the start is past the end.

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Run your code to see results.

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