tricks/dom/domInstance.js

ES6 modules

import instanceOf from '../object/instanceOf.js';

export default function isDomInstance(type, data) {
	const test = `HTML${(type || '').replace(
		/^[a-z]/,
		m => m.toUpperCase()
	)}Element`;

	if (!data) {
		return false;
	}

	if (window[test]) {
		return instanceOf(data, window[test]);
	}
	else if (window.Element) {
		return instanceOf(data, window.Element) && (!type || (data.tagName && data.tagName.toLowerCase() === type));
	}
	else {
		return (!(instanceOf(data, Object) || instanceOf(data, Array) || instanceOf(data, String) || instanceOf(data, Number)) && data.tagName && data.tagName.toLowerCase() === type);
	}
}