JSFiddle - React, Tailwind, and code Playground
HTML
<span id='first'></span><br>
<span id='second'></span><br>
<input type='text' id='first_input'><br>
<input type='text' id='second_input'><br>JavaScript
$('#first').val('firts<sup>2</sub>');
$('#second').html('second<sup>2</sub>');
$('#first_input').val('firts<sup>2</sub>');
$('#second_input').val('second<sup>2</sup>');