Container / presentational

React chapter 106 · patterns.dev · Container/Presentational · source: https://www.patterns.dev/react/presentational-container-pattern

The problem

One component fetches dogs and also maps them to <img>. You cannot reuse the gallery with mock data. Designers cannot restyle without touching fetch. Tests mock the network to check layout.

The pattern that fixes it

Presentational: props in, UI out. Container: fetch / store, pass data down. Today a custom hook (14) is the container — no extra wrapper node. Same split of concerns, less tree.

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