JSFiddle - React, Tailwind, and code Playground

HTML

<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<div class="one">dfv</div>
<span class="one">oiuoiuioou</span>

JavaScript

$(document).ready(function () {
    if( $('.one').is('div').hasClass('one') ){
        $('.one').css({ 'color' : '#f00' });
    }
});