JSFiddle - React, Tailwind, and code Playground

HTML

<button id="action">ClickMe</button>

JavaScript

var xmlString = '<myxml myattr="awesome"></myxml>';
    xmlDoc = $.parseXML( xmlString ),
    $xml = $( xmlDoc ),
    myxml = $xml.find('myxml'),
    domElement = $('<div>');

$('#action').click(function(){
    for ( var i = 0; i < 500; i++ ) {
        domElement.append('<div>');
        myxml.attr('myattr');
    }    
    console.log('done');
});