JSFiddle - React, Tailwind, and code Playground

HTML

<p class="item">Item 1</p>
<p class="item">Item 2</p>
<p class="item group">Item 3</p>
<p class="item group">Item 4</p>
<p class="item">Item 5</p>

JavaScript

var group = [];

$('.item').each(function(i, item){
    if( $(item).hasClass('group') ) {
        group.push(item);
    }
});

$(group).wrap('<div class="wrap" />');