Filtering and live reports

중급~35 분0/4 단계

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.

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

html

9 줄

<!DOCTYPE html>
<html lang="he" dir="rtl"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Smart Ledger · מודול 7</title><script src="https://cdn.tailwindcss.com"></script></head><body class="min-h-screen bg-stone-100 p-6"><main class="mx-auto max-w-4xl"><p class="text-xs font-bold text-rose-800">נתוני תרגול בלבד</p><div class="mt-2 flex items-center justify-between"><h1 class="text-3xl font-black">דוח תזרים</h1><select id="category-filter" class="rounded-lg border p-2"><option value="all">כל הקטגוריות</option><option value="sales">מכירות</option><option value="office">משרד</option></select></div><div id="kpis" class="mt-6 grid grid-cols-3 gap-3"></div><ul id="report-rows" class="mt-5 space-y-2"></ul></main><script>
  const DEMO_TRANSACTIONS = [
    { id: 1, date: '2026-08-01', description: 'מכירת תרגול', category: 'sales', type: 'income', amountAgorot: 240000 },
    { id: 2, date: '2026-08-02', description: 'ציוד תרגול', category: 'office', type: 'expense', amountAgorot: 45000 }
  ];
  let selectedCategory = 'all';
  // Build getVisibleTransactions(), calculateReport(), and renderReport().
</script></body></html>

Filtering and live reports

Derive a report from the ledger

안내

내 코드

실시간 미리보기