JSFiddle - React, Tailwind, and code Playground

HTML

<div id="label-container">
<div id="E12" class="btn btn-default btnTicketType" value="E12" name="btnSeat">Child</div>
</div>

<hr />
<button id="btnGetName">
  get names
</button>

JavaScript

$(function() {
      $("#btnGetName").click(function() {
      		var nameList = [];
          $("#label-container > span").each(function() {
              nameList.push($(this).text());
              });
              alert(nameList);
          })
      })