JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="parent-list">
  <li id="item-1">Item 1</li>
  <li id="item-2">Item 2</li>
  <li id="item-3">Item 3</li>
  <li id="item-4">Item 4</li>
  <li id="item-5">Item 5</li>
  <li id="item-6">Item 6</li>
  <li id="item-7">Item 7</li>
  <li id="item-8">Item 8</li>
  <li id="item-9">Item 9</li>
</ul>

JavaScript

var ul = document.getElementById("parent-list");
document.querySelectorAll("#parent-list li").onclick = function() {

  alert('click!');

}