JSFiddle - React, Tailwind, and code Playground

by Douglas Santos

HTML

<select class="form-control" id="sexo" name="sexo">
  <option selected>Selecione uma opção</option>
  <option value="Feminino">Feminino</option>
  <option value="Masculino">Masculino</option>
</select>
<button onchange="validaCombo()">Enviar</button>

JavaScript

function validaCampo(){
const $this = $(this);
 if ($this.children().eq() <= 0){
 	console.log('olar');
 }
}