Nuxt State Management
useState, Pinia with Nuxt, SSR state hydration, persistent state, global state patterns
1What is the main role of the useState composable in Nuxt?
What is the main role of the useState composable in Nuxt?
Answer
The useState composable creates a reactive shared state that is SSR-compatible. It ensures that state created server-side is properly hydrated client-side, avoiding hydration mismatches between server and client rendering. Each component using the same key accesses the same shared state.
2Why provide a unique key when using useState?
Why provide a unique key when using useState?
Answer
The key allows sharing state between multiple components and ensures SSR consistency. All components using the same key access the same reactive state. Without a key or with identical keys, states mix up and cause hard-to-debug issues.
3How to correctly initialize state with useState?
How to correctly initialize state with useState?
Answer
useState accepts a key and an initialization function that returns the default value. The function executes only once server-side, then state is hydrated client-side. Never put a value directly (useState('key', 0)) as it doesn't work properly with SSR.
What is SSR hydration in the context of Nuxt state management?
What is the difference between useState and ref/reactive?
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