Svelte基础
Svelte高阶
上下文API
特殊元素
接下来
SvelteKit基础
Shared modules
API routes
$app/state
Errors and redirects
Advanced SvelteKit
Page options
Link options
Advanced routing
Advanced loading
Environment variables
Conclusion
有时候，有时候，我们也想知道转场的开始和尽头。所以贴心的Svelte提供了事件支持监听转场开始和结束：
It can be useful to know when transitions are beginning and ending. Svelte dispatches events that you can listen to like any other DOM event:
App
<p
transition:fly={{ y: 200, duration: 2000 }}
onintrostart={() => status = 'intro started'}
onoutrostart={() => status = 'outro started'}
onintroend={() => status = 'intro ended'}
onoutroend={() => status = 'outro ended'}
>
Flies in and out
</p>1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
<script>
import { fly } from 'svelte/transition';let visible = $state(true);
let status = $state('waiting...');</script>
<p>status: {status}</p><label>
<input type="checkbox" bind:checked={visible} />visible
</label>
{#if visible}<p
transition:fly={{ y: 200, duration: 2000 }}>
Flies in and out
</p>
{/if}