Objects, arrays, and transactions
入门~30 分钟0/4 步骤
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.
操作说明
1
Use filter to select income transactions.
提示： Filter where item.type === 'income'.
2
Use reduce to total amountAgorot.
3
Render transaction rows with map and join.
4
Show income, expenses, and balance in #summary.
你的代码
html
1
2
3
4
5
6
7
8
用 ViBot 来 Vibe0 / 12 条免费消息
描述你想为这一步构建的内容，我来编写代码——然后点击「应用」把它放进你的编辑器。 本步骤：Use filter to select income transactions.
实时预览
实时预览