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svelte-body

v2.0.0

Published

Apply styles to the body in routes! Designed to work with Svelte Kit and Routify.

Downloads

4,499

Readme

Svelte Body

Currently in Svelte Kit and Routify, applying styles per page to the body doesn't work. You can't use :global(body) since the style tags aren't removed and reapplied on route change. svelte-body handles that for you. It's available as an action or component.

Install

npm i svelte-body -D

This library is made for Svelte 5, if you'd like to use Svelte 3/4 checkout v1.

Usage

Just like in regular html you can apply classes with class="" and styles with style="".

<script>
	import { Body } from 'svelte-body';
</script>

<Body class="some classes" style="color: blue" />

Alternativley you can use a style object like so:

<script>
	import { Body } from 'svelte-body';

	const style = {
		backgroundColor: 'violet',
		color: 'white',
		'--cool-css-prop': '😎',
	};
</script>

<Body {style} />

We use clsx under the hood, which allows you to pass different shapes and only have truthy names applied as classes. Read me about it on their docs.

<script>
	import { classList } from 'svelte-body';

	let isBlue = $state(true);
</script>

<Body class="red green blue" />
<Body class={{ red: true, blue: isBlue }} />
<Body class={['red', isBlue && 'blue']} />
<Body class={['red', { blue: isBlue }]} />

Actions

We also provide a classList and style action, which can be used on <svelte:body /> (or any other element).

  • classList

    <script>
        import { classList } from 'svelte-body';
    </script>
    
    <svelte:body use:classList={"red green blue"} />
    <svelte:body use:classList={{ red: true, blue: isBlue }} />
    <svelte:body use:classList={['red', isBlue && 'blue']} />
    <svelte:body use:classList={[ 'red', { blue: isBlue } ]} />
  • style

    <script>
    	import { style } from 'svelte-body';
    </script>
    
    <svelte:body use:style={'background-color: blue;'} />

    It can also take an object:

    <script>
    	import { style } from 'svelte-body';
    </script>
    
    <svelte:body
    	use:style={{ backgroundColor: 'blue', '--cool-css-prop': '😎' }} />

Migrating from v1 to v2

  • Svelte 5 is now required
  • We updated to clsx v2

Read the full changelog.

Support