JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test1">1</div>
  <div id="test2">test 2</div>

  <button class="addQuery" value='push-down' onclick='addQuery("test1")'>button</button>
  <button class="addQuery" value='push-up' onclick='addQuery("test2")'>button</button>

  <script type="text/javascript" src="./script.js"></script>

JavaScript

function addQuery(element){
	console.log(document.getElementById(element).innerHTML);
  if(isNaN(document.getElementById(element).innerHTML)) document.getElementById(element).innerHTML = 0;
  document.getElementById(element).innerHTML = parseInt(document.getElementById(element).innerHTML) + 1;
}