jquery如何获取type=hidden的input元素的值？

     function setHiddenFields() {
        var hiddens = $("input:hidden");
        $.each(hiddens, function (index, e) {
            for(var key in warningForm){
                if(isEmptyStr(warningForm[key])){
                    warningForm[key] = "";//把null属性转成空字符
                }
                if(e.id == tranformStr(key)){
                    $(e).val(warningForm[key]);
                }
            }
            if(e.id=="recordFeecbackId"){
                $(e).val(dataObj.recordFeecbackId);
}
        });
    }