Building Custom React Hooks

React ↔ Angular reference. React examples use React 19 + TypeScript. Angular examples use modern Angular (standalone components, signals, inject(), @if/@for).

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11 questions

1
What a Custom Hook Is
A custom hook is a function whose name starts with use and that calls other hooks (useState, useEffect, etc.) to package reusable logic.
2
Building a Custom Hook: useFetch
A generic hook that runs any async fetch function and manages its loading, error, and data state.
3
Consuming a Custom Hook
Calling the hook inside a component and destructuring what it returns.
4
Each Call Gets Its Own State
Every component that calls a custom hook gets a separate, independent copy of the hook's state and effects.
5
Summary