Objects, arrays, and transactions
Move from single values to a ledger
An object groups the fields that belong to one transaction. An array holds many transactions. Array methods let you transform that real structure instead of copying totals by hand.
The included rows are explicitly marked as practice data. Your job is to render them and derive income, expenses, and balance from the array.
Anweisungen
Use filter to select income transactions.
Tipp: Filter where item.type === 'income'.
Wo kommt das hin?
// Use map to render rows and reduce to calculate totals.Schreib es in Zeile 8 — unter diesem Kommentar, nach dem Code, den du schon ergänzt hast.
Use reduce to total amountAgorot.
Render transaction rows with map and join.
Show income, expenses, and balance in #summary.
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: Use filter to select income transactions.