Check an option when selecting an option from another select Javascript

Question

Hello, I have first select option:

<select name="auto" id="auto">
  <option value="">S/N</option>
  <option value="S">Sim</option>
  <option value="N">Não</option>
</select>

And I also have 2nd select option:

<select name="conta" id="conta">
  <option value="">Selecione</option>
  <option value="+">Somar</option>
  <option value="*">Multiplica</option>
</select>

I have this script but it’s not working, it doesn’t do any action when selecting the option auto.

$('#auto').change(function () {
   const auto = $('#auto').val();
   const conta = $('#conta').val();
   $('#auto').val('');
}).change();

I wish that when I choose any option of first select auto, he put the 2nd select account in the Select option, if you have any other option already selected, you can?

Answer 1

here you are:

$('#auto').change(function(){
  $('#conta').val('');
});

<select name="auto" id="auto">
  <option value="">S/N</option>
  <option value="S">Sim</option>
  <option value="N">Não</option>
</select>

<select name="conta" id="conta">
  <option value="">Selecione</option>
  <option value="+">Somar</option>
  <option value="*">Multiplica</option>
</select>

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>