JSFiddle - React, Tailwind, and code Playground

HTML

<!-- JavaScript element.classList Object item() method Example -->
<!-- blog.kevinchisholm.com -->

<div id="foo" class="bar baz bif"></div>
<script>
    var foo = document.getElementById('foo');
    
    foo.innerHTML = 'foo\'s classes are: ' +
    foo.classList.item(0) + ', ' +
    foo.classList.item(1) + ', ' +
    foo.classList.item(2);
</script>