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Bases de Svelte
Introduction
Réactivité
Props
Logique
Évènements
Liaisons
Classes et styles
Actions
Transitions
Svelte avancé
Réactivité avancée
Réutiliser du contenu
Mouvements
Liaisons avancées
Advanced transitions
Context API
Special elements
<script module>
Next steps
Basic SvelteKit
Introduction
Routing
Loading data
Headers and cookies
Shared modules
Forms
API routes
$app/state
Errors and redirects
Advanced SvelteKit
Hooks
Page options
Link options
Advanced routing
Advanced loading
Environment variables
Conclusion

Just as you can add event listeners to any DOM element, you can add event listeners to the window object with <svelte:window>.

We’ve already got an onkeydown function declared — now all we need to do is wire it up:

App
<svelte:window {onkeydown} />

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<script>
	let key = $state();
	let keyCode = $state();
 
	function onkeydown(event) {
		key = event.key;
		keyCode = event.keyCode;
	}
</script>
 
<svelte:window />
 
<div style="text-align: center">
	{#if key}
		<kbd>{key === ' ' ? 'Space' : key}</kbd>
		<p>{keyCode}</p>
	{:else}
		<p>Focus this window and press any key</p>
	{/if}
</div>
 
<style>
	div {
		display: flex;
		height: 100%;
		align-items: center;
		justify-content: center;
		flex-direction: column;
	}
 
	kbd {
		border-radius: 4px;
		font-size: 6em;
		padding: 0.2em 0.5em;
		background-color: #eeeeee;
		border-top: 5px solid #f9f9f9;
		border-left: 5px solid #f9f9f9;
		border-right: 5px solid #aaaaaa;
		border-bottom: 5px solid #aaaaaa;
		color: #555;
	}
</style>