JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <div data-floor="0" id="Floor0">
    <div>
      <label>0</label>
    </div>
    <div>
      <input type="checkbox" id="a0" />
    </div>
  </div>
  <div data-floor="1" id="Floor1">
    <div>
      <label>1</label>
    </div>
    <div>
      <input type="checkbox" id="a1" />
    </div>
  </div>
  <div data-floor="2" id="Floor2">
    <div>
      <label>2</label>
    </div>
    <div>
      <input type="checkbox" id="a2" />
    </div>
  </div>
</div>

JavaScript

console.log($("#Floor2").data("floor"));
console.log($("#Floor1").data("floor"));
console.log($("#Floor0").data("floor"));


Test('a2');
Test('a1');
Test('a0');


function Test(id){

  var FloorId = $("#"+id).parents().filter(function() {
    return $(this).data("floor");
  }).eq(0);
	console.log(FloorId.data("floor"));
  
}