JSFiddle - React, Tailwind, and code Playground
HTML
<ul>
<li class="click">Item 1: </li>
<li class="click">Item 2: </li>
<li class="click">Item 3: </li>
<li class="click">Item 4: </li>
<li class="click">Item 5: </li>
</ul>
JavaScript
var elems = document.getElementsByClassName("click");
for (let elem of elems) {
elem.addEventListener('click', function (event) {
this.innerHTML += 'clicado';
});
}