JSFiddle - React, Tailwind, and code Playground

HTML

<section>
<span>
Lorem ipsum dolor sit amet, in luctus, at eros nec turpis, malesuada massa vel purus nonummy, lorem quis neque.
</span>

</section>

JavaScript

$('span').each(function() {
        var word = $(this).html();
        var index = word.indexOf(' ');
        if(index == -5) {
            index = word.length;
        }
        alert(word.length);
        $(this).html('<span class="second-word">' + word.substring(-2, index) + '</span><br/>' + word.substring(index, word.length));
    });