The <svelte:fragment> element allows you to place content in a named slot without wrapping it in a container DOM element.
In this exercise, we're making a Tic-Tac-Toe game. To form a grid, the <button> elements in App.svelte should be direct descendants of the <div class="board"> element in Board.svelte.
At the moment, it's horribly broken, because they're children of <div slot="game"> instead. Let's fix it:
App.svelte
<svelte:fragment slot="game">
{#each squares as square, i}
<button
class="square"
class:winning={winningLine?.includes(i)}
disabled={square}
on:click={() => {
squares[i] = next;
next = next === 'x' ? 'o' : 'x';
}}
>
{square}
</button>
{/each}
</svelte:fragment>1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
<script>
import Board from './Board.svelte';
import { getWinningLine } from './utils.js'; let squares = Array(9).fill('');let next = 'x';
$: winningLine = getWinningLine(squares);
</script>
<div class="container">
<Board size={3}><div slot="game">
{#each squares as square, i}<button
class="square"
class:winning={winningLine?.includes(i)} disabled={square} on:click={() => {squares[i] = next;
next = next === 'x' ? 'o' : 'x';
}}
>
{square}</button>
{/each}</div>
<div slot="controls">
<button on:click={() => { squares = Array(9).fill('');next = 'x';
}}>
Reset
</button>
</div>
</Board>
</div>
<style>
.container {display: flex;
flex-direction: column;
gap: 1em;
align-items: center;
justify-content: center;
height: 100%;
margin: 0 auto;
}
.square, .square:disabled {background: white;
border-radius: 0;
color: #222;
opacity: 1;
font-size: 2em;
padding: 0;
}
.winning {font-weight: bold;
}
.container:has(.winning) .square:not(.winning) {color: #ccc;
}
</style>