<script>
let name = 'world';
let offers = [
{id: 1, name: 'One', checked: false},
{id: 2, name: 'Two', checked: false},
{id: 3, name: 'Three', checked: false},
]
</script>
{#each offers as offer, index (offer.id)}
<label for={'checkbox'+offer.id}>{offer.name}</label>
<input id={'checkbox'+offer.id} bind:checked={offer.checked} type='checkbox'/>
{/each}
<div>
{offers.filter(offer => offer.checked).map(offer => offer.name)}
</div>