if (typeof window.DOMTokenList === 'undefined') {

	// Constants from jQuery
	var rclass = /[\t\r\n]/g;
	var core_rnotwhite = /\S+/g;

	// from jQuery
	exports.hasClass = function(ele, className) {
	    className = " " + className + " ";
	    return (" " + ele.className + " ").replace(rclass, " ").indexOf(className) >= 0;
	}

	exports.addClass = function(ele, value) {
	    var classes = (value || "").match(core_rnotwhite) || [],
	            cur = ele.className ? (" " + ele.className + " ").replace(rclass, " ") : " ";

	    if (cur) {
	        var j = 0, clazz;
	        while ((clazz = classes[j++])) {
	            if (cur.indexOf(" " + clazz + " ") < 0) {
	                cur += clazz + " ";
	            }
	        }
	        ele.className = cur.trim();
	    }
	}

	exports.removeClass = function(ele, value) {
	    var classes = (value || "").match(core_rnotwhite) || [],
	            cur = ele.className ? (" " + ele.className + " ").replace(rclass, " ") : " ";

	    if (cur) {
	        var j = 0, clazz;
	        while ((clazz = classes[j++])) {
	            while (cur.indexOf(" " + clazz + " ") >= 0) {
	                cur = cur.replace(" " + clazz + " ", " ");
	            }
	            ele.className = value ? cur.trim() : "";
	        }
	    }
	}

	exports.toggleClass = function(ele, value) {
	    var classes = (value || "").match(core_rnotwhite) || [],
	            cur = ele.className ? (" " + ele.className + " ").replace(rclass, " ") : " ";

	    if (cur) {
	        var j = 0, clazz;
	        while ((clazz = classes[j++])) {
	            var removeCount = 0;
	            while (cur.indexOf(" " + clazz + " ") >= 0) {
	                cur = cur.replace(" " + clazz + " ", " ");
	                removeCount++;
	            }
	            if (removeCount === 0) {
	                cur += clazz + " ";
	            }
	            ele.className = cur.trim();
	        }
	    }
	}

} else {

	exports.hasClass = function(el, className) {
	    return el.classList.contains(className);
	}

	exports.addClass = function(el, classes) {
	    if (classes.indexOf(' ') >= 0) {
	        classes.split(/\s+/).forEach(function(c) {
	            el.classList.add(c);
	        });
	    } else {
	        el.classList.add(classes);
	    }
	}

	exports.removeClass = function(el, classes) {
	    if (classes.indexOf(' ') >= 0) {
	        classes.split(/\s+/).forEach(function(c) {
	            el.classList.remove(c);
	        });
	    } else {
	        el.classList.remove(classes);
	    }
	}

	exports.toggleClass = function(el, classes) {
	    if (classes.indexOf(' ') >= 0) {
	        classes.split(/\s+/).forEach(function(c) {
	            el.classList.toggle(c);
	        });
	    } else {
	        el.classList.toggle(classes);
	    }
	}

}

exports.removeMatchingClasses = function(el, regex) {
	var out = '';
	el.className.split(/\s+/).forEach(function(cn) {
		if (!cn.match(regex)) {
			if (out.length) {
				out += ' ';
			}
			out += cn;
		}
	});
	el.className = out;
}