interactive content HTML elements where tab through document gives focus

interactivecontent.js

/*
	needed to manage tab focus (focusin) events leading to the following selector to adjust;
	
	reference
	* https://html.spec.whatwg.org/multipage/dom.html#interactive-content
	additional info:
	* https://www.tpgi.com/using-the-tabindex-attribute/
	* https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex
	and various linked/related in the above (or simply Google a bit)
 */
function interactivecontent(node=document){
	// [tabindex] added for some contexts
	return node.querySelectorAll(`[tabindex], a[href], audio[controls], button, details, embed, iframe, img[usemap], input, label, select, textarea, video[controls]`);
}