解决了。用这个
<x-input select class="w-[270px] h-10 duration-100"
@change="confirm ? modal = true : subActive = $event.target.value;
confirm ? tempSubActive = $event.target.value : tempSubActive = subActive;
confirm ? $event.target.value = subActive : tempSubActive = subActive;"
x-bind:disabled="modal ? true : false">
@foreach (DB::table('t930_calendar_name')->get() as $v)
<option value="{{ $v->c_calendar_name }}"
x-text="tempSubActive != subActive ? tempSubActive : '{{ $v->c_calendar_name }}'">
</option>
@endforeach
</x-input>