JSFiddle - React, Tailwind, and code Playground
HTML
<input type="text" id="test" name="test" value="1.23">
<div class='txt'></div>
JavaScript
$('#test').next('.txt').text($('#test').val());
<input type="text" id="test" name="test" value="1.23">
<div class='txt'></div>
$('#test').next('.txt').text($('#test').val());