Capstone: ship Smart Ledger
Assemble the product
This capstone starts empty—there is no fake ledger. A real user adds their own transactions. The app validates and normalizes input, stores amounts as agorot, persists locally, derives KPIs, filters rows, deletes entries, and exports a JSON backup.
The export is a real artifact. The storage is real browser storage. The only limitation is deliberate: this learning project never connects to a bank and never asks for banking credentials.
Anweisungen
Implement loadTransactions and saveTransactions using localStorage and JSON.
Tipp: Restore [] on parse failure; stringify transactions on every mutation.
Wo kommt das hin?
// Assemble: load/save, validation, add/delete, derived KPIs, filter, and JSON export.Schreib es in Zeile 5 — unter diesem Kommentar, nach dem Code, den du schon ergänzt hast.
Validate and normalize input in createTransaction.
Render KPIs and filtered rows from the transactions array.
Implement add and delete flows, saving after each mutation.
Export a real JSON backup with Blob and URL.createObjectURL.
Dein Code
Beschreibe, was du für diesen Schritt bauen willst, und ich schreibe den Code — klicke dann auf Übernehmen, um ihn in deinen Editor zu übertragen. Dieser Schritt: Implement loadTransactions and saveTransactions using localStorage and JSON.