You can bind to properties inside an each
block.
App
{#each todos as todo}
<li class:done={todo.done}>
<input
type="checkbox"
bind:checked={todo.done}
/>
<input
type="text"
placeholder="What needs to be done?"
bind:value={todo.text}
/>
</li>
{/each}
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<script>
let todos = $state([
{ done: false, text: 'finish Svelte tutorial' },
{ done: false, text: 'build an app' },
{ done: false, text: 'world domination' }
]);
function add() {
todos.push({
done: false,
text: ''
});
}
function clear() {
todos = todos.filter((t) => !t.done);
}
let remaining = $derived(todos.filter((t) => !t.done).length);
</script>
<div class="centered">
<h1>todos</h1>
<ul class="todos">
{#each todos as todo}
<li class:done={todo.done}>
<input
type="checkbox"
checked={todo.done}
/>
<input
type="text"
placeholder="What needs to be done?"
value={todo.text}
/>
</li>
{/each}
</ul>
<p>{remaining} remaining</p>
<button onclick={add}>
Add new
</button>
<button onclick={clear}>
Clear completed
</button>
</div>
<style>
.centered {
max-width: 20em;
margin: 0 auto;
}
.done {
opacity: 0.4;
}
li {
display: flex;
}
input[type="text"] {
flex: 1;
padding: 0.5em;
margin: -0.2em 0;
border: none;
}
</style>