Visibility Listener
The VisibilityListener component allows you to monitor when an element becomes
visible or hidden in the viewport. Useful for triggering animations,
lazy-loading content, or tracking visibility.
Example Usage
Section titled “Example Usage”50 is visibile: false
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<script lang="ts"> import { VisibilityListener } from "@fefade-ui/svelte"
let isVisible = $state(false) const n = 50</script>
<h2>{n} is visibile: <span style="color: aqua;">{isVisible}</span></h2><div style="height: 200px; overflow-y: auto; border: 1px solid #ccc;"> {#each Array(100) as _, i (i)} {#if i === n} <VisibilityListener callback={(value) => { isVisible = value }} > <p style="color: aqua;">{i} visible</p> </VisibilityListener> {:else} <p>{i}</p> {/if} {/each}</div>| Prop | Type | Default | Description |
|---|---|---|---|
callback | (isVisible: boolean) => void | — | A function that is called whenever the visibility of the element changes. Receives true if visible, false otherwise. |