JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="t" value="0" />

JavaScript

$('#t').focus();
$('#t').blur(function () {
    if ($('#t').val() != "") {
        $('#t').val(parseInt($('#t').val()) + 1);
        alert("foo");
        $('#t').focus();
    }
});