JSFiddle - React, Tailwind, and code Playground

HTML

<p>
</p>

JavaScript

var p = document.getElementsByTagName( 'p' )[0];
function log( msg ){
    p.innerHTML += "<br/>" + msg;
}

var xml = "<doc><dsp></dsp></doc>",
    $xml = $( $.parseXML( xml ) );
log( 'Nodes found:' + $xml.find('[nodeName=dsp]').length );