Filtering and live reports
Derive a report from the ledger
A report should be derived from source data every time—not maintained as a second, conflicting copy. The selected category determines a filtered view; reduce produces the KPIs; sort makes the audit table predictable.
The practice dataset is visibly labeled. Replace it with your own entries after the exercise.
안내
Create getVisibleTransactions using filter and selectedCategory.
힌트: Keep every item when selectedCategory is all.
어디에 작성하나요?
// Build getVisibleTransactions(), calculateReport(), and renderReport().9번째 줄에 작성하세요 — 그 주석 아래, 이미 추가한 코드 다음입니다.
Sort visible rows by date without changing the source array.
Create calculateReport(items) with reduce.
Listen for filter changes and render the report again.
내 코드
이 단계에서 만들고 싶은 것을 설명해 주시면 코드를 작성해 드릴게요 — 그다음 적용을 클릭하면 에디터에 바로 들어갑니다. 이 단계: Create getVisibleTransactions using filter and selectedCategory.