JSFiddle - React, Tailwind, and code Playground

HTML

<div id="thisdiv" class="class1 class2 class3 class4 class5"> text </div>

JavaScript

$.fn.removeClassesAfter = function(className)
{
    return this.each(function()
    {
        $(this).attr('class', function(i, v)
        {
            var classes = v.split(' '),
                position = $.inArray(className, classes);

            return position == -1 ? v : classes.slice(0, position + 1).join(' ');
        });
    });
};

$('#thisdiv').removeClassesAfter('class3')

alert( $('#thisdiv').attr('class') );