JSFiddle - React, Tailwind, and code Playground

HTML

<span class="form-group_span">×</span>
<input class="form-control" id="email" type="text" required>

JavaScript

$('.form-group_span').hide();
$('.form-control').keyup(function () {
    $('.form-group_span').show();
    if($('.form-control').val() == ''){
    	$('.form-group_span').hide();
    }
});