JSFiddle - React, Tailwind, and code Playground

HTML

<a href='blablabla' class='tags'>tagSYS, </a>
<a href='blablabla' class='tags'>tagSYS, </a>
<a href='blablabla' class='tags'>tagSYS, </a>
<a href='blablabla' class='tags'>tagSYS, </a>

JavaScript

$('.tags:last').html(function () {
    var string = $(this).text();
    string = string.replace(' ', '').replace(/,+$/, "");
    $(this).text(string)
});