How to switch theme

1

I’d like to add toggle to let user change theme for ios from light to dark and vice versa. Will save in cookies. I also have photo browser and need to change theme same time.
What will be the right way to do that?

Thanks

2

this - это app.
//Если Cordova, то нужно добавить:

        if (type != 'light') {
            this.statusbar.setTextColor('white');
            this.statusbar.setBackgroundColor('#1B1B1B');
        } else {
            this.statusbar.setTextColor('black');
            this.statusbar.setBackgroundColor('');
        }

//Код ниже - обязателен:
this.root.removeClass('theme-dark theme-light').addClass('theme-' + type);