A minimal html entities decoder/encoder using DOM

htmlentities.js

/*!
 * A minimal html entities decoder/encoder using DOM.
 * gist.github.com/englishextra/737e35d19bcb4ee62ab85c9f9b292842
 * modified github.com/jussi-kalliokoski/htmlentities.js
 * see issue github.com/jussi-kalliokoski/htmlentities.js/issues/1
 * htmlentities.encode('<&>'); returns '&lt;&amp;&gt;';
 * htmlentities.decode('&lt;&amp;&gt;'); returns '<&>';
 * htmlentities is a shorthand for htmlentities.encode
 */
var htmlentities = (function (a) {
	function e(s) {
		return s = s.replace(/[<!="'\/>&]/g, function (char) {
					return {
						"<" : "&lt;",
						"!" : "&#033;",
						"=" : "&#061;",
						'"' : "&quot;",
						"'" : "&apos;",
						"/" : "&#047;",
						">" : "&gt;",
						"&" : "&amp;"
					}
					[char];
				});
	}
	function b(c) {
		var d = a.createElement("div");
		d.appendChild(a.createTextNode(c));
		c = e(d.innerHTML);
		d = null;
		return c;
	}
	b.decode = function (c) {
		var d = a.createElement("div");
		d.innerHTML = c;
		c = e(d.innerText || d.textContent);
		d = null;
		return c;
	};
	return (b.encode = b)
}
	(document));