JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="example">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</div>
    <div class="wrapper_sub">Other Content</div>
</div>
<div class="wrapper">
    <div class="example">Some Content</div>
    <div class="wrapper_sub">Other Content</div>
</div>
<div class="wrapper">
    <div class="example">Some Content</div>
    <div class="wrapper_sub">Other Content</div>
</div>

JavaScript

var maxHeight = 0; // Initialize to zero
var $example = $('.example'); // Cache to improve performance

$example.each(function () { // Loop over all the elements having class example

    // Get the max height of elements and save in maxHeight variable
    maxHeight = parseFloat($(this).outerHeight()) > maxHeight ? parseFloat($(this).outerHeight()) : maxHeight;
});

$('.wrapper_sub').height(maxHeight); // Set max height to all example elements