javascript解析json

json字符串如下：
{"data":[
  {
    "Url": "",
    "CoursewareId": "1c097a5e-1102-479c-a877-0bd1508468ce",
    "GroupGuid": "6086eb57-cfd8-417c-b8f3-8eae70fc843a",
    "ParentId": "00000000-0000-0000-0000-000000000000",
    "Version": "V1.1",
    "CoursewareName": "0-3岁婴幼儿的保育与教育 ",
    "Description": "一、课程简介《0～3岁婴幼儿保育与教育》是中央广播电视大学学前教育专业本科（专科起点）的专业基础必修课，本课程4学分，72学时，在入学后第三学期开设。本课程与学前教育专业本科课程体系中的其他课程是一脉相承、遥相呼应的，它以学前教育学、学前儿童卫生保健学、儿童心理学和学前儿童等理论为指导，细致研究社区早教基地和家庭教育中的0~3岁婴幼儿的保育与教育问题，旨在帮助早教专业人员和家长掌握适宜的早教理念和... ",
    "IsPublish": 0,
    "CoursewareTypeId": "2fcbdf8c-83d4-491a-bb26-513ef3451e9c",
    "VendorId": 1,
    "PictureListId": "293f88fd-9504-4feb-9f43-026162fed3c9",
    "StatusId": 0,
    "CreateUserId": 0,
    "CreateDate": "2013-02-19 13:02:02",
    "ModifyUserId": -2147483648,
    "ModifyDate": "1753-01-01 00:00:00"
  },
  {
    "Url": "",
    "CoursewareId": "3c72d199-c855-4680-8151-7516f77c324b",
    "GroupGuid": "21916f2d-c6a1-4a4b-a8c9-0f24ede34587",
    "ParentId": "00000000-0000-0000-0000-000000000000",
    "Version": "V1.1",
    "CoursewareName": "高级财务会计",
    "Description": "这个是课件描述的东西",
    "IsPublish": 0,
    "CoursewareTypeId": "2fcbdf8c-83d4-491a-bb26-513ef3451e9c",
    "VendorId": 1,
    "PictureListId": "eaa55554-e272-431d-9a16-5f06e88437a9",
    "StatusId": 0,
    "CreateUserId": 0,
    "CreateDate": "2013-02-19 11:38:55",
    "ModifyUserId": -2147483648,
    "ModifyDate": "1753-01-01 00:00:00"
  }
],"count":[{ "count":"2"}]
}


我们按照data和count分别处理：

  var j = eval(data);
                    $.each(j.data, function (i, item) {
                        alert(item.CoursewareName);

                    });
                    $.each(j.count, function (i, item) {
                        alert(item.count);

                    });