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<script lang="ts">
import { onDestroy } from 'svelte'
import { browser } from '$app/env'
export let url: string
function updateUrl() {
if (!browser) return
for (const styleEl of document.getElementsByClassName('background-image-style'))
styleEl.innerHTML = ''
// add bodyStyle to the head
const style = document.createElement('style')
style.classList.add('background-image-style')
style.innerHTML = `:root{--background:url(${url})}`
document.head.appendChild(style)
}
$: [url, updateUrl()]
// get rid of the body style when we leave the page
// not doing this will sometimes cause the background to stay
onDestroy(() => {
if (browser) {
for (const styleEl of document.getElementsByClassName('background-image-style'))
styleEl.innerHTML = ''
}
})
</script>
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