Each block bindings

You can even bind to properties inside an each block.

<input
    type=checkbox
    bind:checked={todo.done}
>
<input
    placeholder="What needs to be done?"
    bind:value={todo.text}
>

Note that interacting with these <input> elements will mutate the array. If you prefer to work with immutable data, you should avoid these bindings and use event handlers instead.