Close a mmenu using the back button with the History API and popstate

mmenu-back-close.js

jQuery("#mmenu").mmenu({
	/* Options Here */
}, {
	/* Configuration Here */
}).on('opened.mm', function(){
	history.replaceState(null, document.title, location);
	history.pushState(null, document.title, location);
});

//Close mmenu on back button click
if (window.history && window.history.pushState) {
	window.addEventListener("popstate", function(e) {
		if ( jQuery('html.mm-opened').is('*') ) {
			jQuery(".mm-menu").trigger("close.mm");
			e.stopPropagation();
		}
	}, false);
}