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Basic Svelte
Introduction
Reactivity
Props
Logic
Events
Bindings
Classes and styles
Actions
Transitions
Advanced Svelte
Advanced reactivity
Reusing content
Motion
Advanced bindings
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
Advanced Svelte Special elements <svelte:body>

Similar to <svelte:window> and <svelte:document>, the <svelte:body> element allows you to listen for events that fire on document.body. This is useful with the mouseenter and mouseleave events, which don’t fire on window.

Add onmouseenter and onmouseleave handlers to the <svelte:body> tag...

App
<svelte:body
	onmouseenter={() => hereKitty = true}
	onmouseleave={() => hereKitty = false}
/>

...and hover over the <body>.

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<svelte:document>
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<script>
	import kitten from './kitten.png';
 
	let hereKitty = $state(false);
</script>
 
<svelte:body />
 
<!-- creative commons BY-NC http://www.pngall.com/kitten-png/download/7247 -->
<img
	class={{ curious: hereKitty }}
	alt="Kitten wants to know what's going on"
	src={kitten}
/>
 
<style>
	img {
		position: absolute;
		left: 0;
		bottom: -60px;
		transform: translate(-80%, 0) rotate(-15deg);
		transform-origin: 100% 100%;
		transition: transform 0.4s;
	}
 
	.curious {
		transform: translate(-15%, 0) rotate(0deg);
	}
 
	:global(body) {
		overflow: hidden;
	}
</style>