页面的标签元素对象中添加的自定义属性截取问题

 var ss = $(obj).val();
            var roles = ${role_json};
            console.log(roles);
            var pic,tips,is_email;
            for(var k in roles) {
                    if(ss == roles[k].id){
                        pic = roles[k].pic;
                        tips =  roles[k].tips;
                        is_email = roles[k].is_email;
                        break;
                    }
            }