JSFiddle - React, Tailwind, and code Playground
HTML
<p class="test1 test2">text</p>
<p class="test1 test2">text2</p>
<p class="test1 test2">text3</p>
<p class="test1 test2">text4</p>
<p class="test1 test2">text5</p>
JavaScript
$("p").each(function(index){
console.log(index);
if(index==1){
$(this).removeClass('test2');
}
});