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.
Istruzioni
Implement loadTransactions and saveTransactions using localStorage and JSON.
Suggerimento: Restore [] on parse failure; stringify transactions on every mutation.
Dove va scritto?
// Assemble: load/save, validation, add/delete, derived KPIs, filter, and JSON export.Scrivilo alla riga 5: sotto quel commento, dopo il codice che hai già aggiunto.
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.
Il tuo codice
Descrivi ciò che vuoi creare per questo passaggio e scriverò il codice — poi clicca su Applica per inserirlo nel tuo editor. Questo passaggio: Implement loadTransactions and saveTransactions using localStorage and JSON.