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fix: correct scroll position if needed #343

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fix: correct scroll position if needed #343

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25 changes: 24 additions & 1 deletion apps/svelte.dev/src/routes/docs/[...path]/OnThisPage.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,30 @@
}
</script>

<svelte:window onscroll={update} onhashchange={() => (current = location.hash.slice(1))} />
<svelte:window
onscroll={update}
onhashchange={() => {
current = location.hash.slice(1);
// Correct scroll position if needed
const active = [...headings.values()].find((entry) => entry.id === current);
if (active) {
const { top, bottom } = active.getBoundingClientRect();
const min = 100;
const max = window.innerHeight - 100;
if (top > max) {
window.scrollBy({
top: top - max,
left: 0
});
} else if (bottom < min) {
window.scrollBy({
top: bottom - min,
left: 0
});
}
}
}}
/>

<aside class="on-this-page">
<label>
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