<script> import { fly } from 'svelte/transition'; let visible = true; let status = 'waiting...'; </script> <p>status: {status}</p> <label> <input type="checkbox" bind:checked={visible} /> visible </label> {#if visible} <p transition:fly={{ y: 200, duration: 2000 }} on:introstart={() => (status = 'intro started')} on:outrostart={() => (status = 'outro started')} on:introend={() => (status = 'intro ended')} on:outroend={() => (status = 'outro ended')} > Flies in and out </p> {/if}