JSFiddle - React, Tailwind, and code Playground

HTML

<label id="quantite" for="quantite">Quantite :</label>
<input id="QteSpinner" value="1"><br/>
<p><font size="3"><b>For more FAQs Visit <a  target="_blank"href="http://jqfaq.com/"</a>JQFaq.com<b/><font/><p/>
<iframe id="iframe1" src="http://jqfaq.com/AdPage.html" style="width:100%; height:115px; border:none;"
/>

JavaScript

var value;
var $container=$("#QteSpinner");
var newSpinner = $container.spinner({
    min: 1,
}).focus(function () {
    value = $container.val();
}).blur(function () {
    var value1 = $container.val();
    if (value1<0) {
        $container.val(value);
    }
    if(isNaN(value1))
    {
        $container.val(value);
    }
});