A select can have a multiple attribute, in which case it will populate an array rather than selecting a single value.

Returning to our earlier ice cream example, we can replace the checkboxes with a <select multiple>:

<h2>Flavours</h2>

<select multiple bind:value={flavours}>
  {#each menu as flavour}
    <option value={flavour}>
      {flavour}
    </option>
  {/each}
</select>

Press and hold the control key (or the command key on MacOS) for selecting multiple options.