Basic Svelte
Bindings
Classes and styles
Advanced Svelte
Advanced reactivity
Motion
Advanced bindings
Advanced transitions
Context API
Special elements
<script module>
Next steps
Basic SvelteKit
Introduction
Routing
Loading data
Headers and cookies
Shared modules
API routes
$app/state
Errors and redirects
Advanced SvelteKit
Page options
Link options
Advanced routing
Advanced loading
Environment variables
Conclusion
Nested.svelte の props のデフォルト値を簡単に指定することができます。
Nested
<script>
let { answer = 'a mystery' } = $props();
</script><script lang="ts">
let { answer = 'a mystery' } = $props();
</script>answer prop なしで2つ目のコンポーネントを追加すると、デフォルト値にフォールバックすることがわかります。
App
<Nested answer={42}/>
<Nested />previous next
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<script>
import Nested from './Nested.svelte';
</script>
<Nested answer={42} />