JSFiddle - React, Tailwind, and code Playground

HTML

<div xmlns:ng="http://angularjs.org/">
    <ng:foo onload="my onload attr" bar="bar val"></ng:foo>
</div>
<div id="out"></div>

JavaScript

var foo = $("ng\\:foo");
var out = $("#out");
out.append("bar: <tt>" + foo.attr('bar') + "</tt><br/>");
out.append("onload: <tt>" + foo.attr('onload') + "</tt><br/>");
out.append("onload DOM: <tt>" + foo[0].getAttribute('onload') + "</tt>");