function pos(){        var items = $(‘.starone‘);        items.each(function () {            var rand = getRandom();            $(this).addClass("pos-" + rand);        });    }    var arry=[1,2,3,4,5,6,7];    function getRandom() {        var i=Math.floor(Math.random()*arry.length);        var rand=arry[i];        arry.splice(i,1);        return rand;    }    pos();