JSFiddle - React, Tailwind, and code Playground
HTML
<div id="dv" class="red green blue">Something Here !!</div>
JavaScript
$.each( $('#dv').attr("class").split(" "), function(i, data) {
alert(data)
})
<div id="dv" class="red green blue">Something Here !!</div>
$.each( $('#dv').attr("class").split(" "), function(i, data) {
alert(data)
})