orientationchange on iOS and Android.

orientationchangeevent.js

function orientationchangeevent(fn, context) {

    return function() {
        var args;

        if (context.orientationchangeeventTimeout) {
            clearTimeout(context.orientationchangeeventTimeout);
        }

        args = [].slice.call(arguments);
        context.orientationchangeeventTimeout = setTimeout(bind(function() {
            var orientation = window.orientation;

            if (orientation !== context.lastOrientation) {
                fn.apply(context, args);
            }

            context.lastOrientation = orientation;
        }, context), /Android/.test(navigator.userAgent) ? 500 : 0);
    };

    function bind(fn, scope) {
        return fn.bind ? fn.bind(scope) : function() {
            fn.apply(scope, arguments);
        }
    }
}