JSFiddle - React, Tailwind, and code Playground

HTML

<div id='target'>
</div>

JavaScript

function iSJqueryObj(elm)
{
    return elm && jQuery.isFunction(elm.html);
}

function writeToConsole(msg)
{
    jQuery('#target').append(msg+"<br>");
}

jQuery(function(){
    writeToConsole(iSJqueryObj("foo"));
    writeToConsole(iSJqueryObj(jQuery('#target')));
});