JSFiddle - React, Tailwind, and code Playground

HTML

<div class="field">
  <input type="text" value="12">
</div>
<div class="field">
  <input type="text" value="13">
</div>
<div class="field">
  <input type="text" value="">
</div>
<div class="field">
  <input type="text">
</div>

CSS

.first_empty input {
    border: 2px solid black;
}

JavaScript

$('.field :input').filter(':text[value=""]').parent().addClass('first_empty');