handy element creator

elm.js

function Elm(tag = "div", contents = "", attrs = {}) {
	var elm = tag instanceof Element ? tag : document.createElement(tag);
	Object.entries(attrs).forEach(([k, v]) => {
		if(typeof v === "function") return elm.addEventListener(k, v);
		if(k === "dataset") return Object.keys(v).forEach(x => elm.dataset[x] = v[x]);
		elm.setAttribute(k, v);
	});
	if(/</.test(contents)) { elm.innerHTML = contents; } else { elm.append(contents);	}
 return elm;
}//end Elm()