JSFiddle - React, Tailwind, and code Playground

HTML

<form>
  <table></table>
  <div class="class1"> 1</div>
  <div class="class2"> 2</div>
  <div class="class3"> 3</div>
</form>

JavaScript

if ($('table').length > 0) {
  $("table").siblings().first().hide();
}