前者循环的是属性,后者循环的才是数组。 若项目中对数组属性进行了扩展,那切记不能使用前者,否则在循环数组时扩展的函数体也会被当做数据返回。 var data = { p1:1, p2:"b" }; for (var i in data){ alert(eval("data." + i)); } for(var i in items) 慎用 尤其在需要兼容IE8时。
eg:
var data=
[
{
"LAY_TABLE_INDEX": 0,
"createTime": "2019-11-20 17:13:11",
"createUser": "8",
"id": 92,
"mergeFlag": 0,
"onlineFlag": 0,
"querySql": "select u.user_login_name as userLoginName,u.user_name as userName,u.user_status as userStatus,r.role_name as roleName,u.creator,u.create_time as createTime,u.modifier,u.update_time as updateTime from system_user u left join system_user_role ur on ur.user_id=u.user_id left join system_role r on ur.role_id=r.role_id",
"reportName": "用户统计报表",
"reportType": "",
"tableHeaderLevel": 3
},
{
"LAY_TABLE_INDEX": 1,
"createTime": "2019-11-20 17:13:11",
"createUser": "8",
"id": 93,
"mergeFlag": 1,
"querySql": "select section_owner_name as owner,section_name as roadsubsection,toll_station_name as tollstation,lanetype as lanetype,cardtype as cardtype,type as inletandoutlet,bus1 as passenger1,bus2 as passenger2,bus3 as passenger3,bus4 as passenger4,bus_traffic as subtotal1,truck1,truck2,truck3,truck4,truck5,truck_traffic as subtotal2,traffic as total from st_etc_day_all_sum_dm_20191028",
"reportBore": "fdsafd",
"reportName": "ETC使用率报表修改",
"reportType": "",
"tableHeaderLevel": 4
},
{
"LAY_TABLE_INDEX": 2,
"createTime": "2019-12-05 14:51:09",
"createUser": "8",
"id": 104,
"mergeFlag": 0,
"onlineFlag": 0,
"querySql": ",select section_owner_name ,section_name as roadsubsection,toll_station_name as tollstation,bus1 as passenger1,bus2 as passenger2,bus3 as passenger3,bus4 as passenger4,bus_traffic as subtotal1,traffic as total from st_etc_day_all_sum_dm_20191028",
"reportBore": "fdgfds",
"reportName": "ETC使用率报表96",
"reportType": "1",
"tableHeaderLevel": 3
},
{
"LAY_TABLE_INDEX": 3,
"createTime": "2019-12-05 14:59:14",
"createUser": "8",
"id": 106,
"mergeFlag": 0,
"onlineFlag": 0,
"querySql": "select section_owner_name ,section_name as roadsubsection,toll_station_name as tollstation,bus1 as passenger1,bus2 as passenger2,bus3 as passenger3,bus4 as passenger4,bus_traffic as subtotal1,traffic as total from st_etc_day_all_sum_dm_20191028",
"reportBore": "dsddfdf",
"reportName": "ETC使用率报表修改",
"reportType": "1",
"tableHeaderLevel": 3
},
{
"LAY_TABLE_INDEX": 4,
"accountPerType": 1,
"createTime": "2019-12-19 10:04:27",
"createUser": "8",
"id": 107,
"mergeFlag": 1,
"onlineFlag": 0,
"querySql": "select id,type,mjnumber,source,sum,secussssum,secusslv,descf from hsop_test order by id",
"reportBore": "测试合并",
"reportName": "测试合并",
"reportType": "1",
"tableHeaderLevel": 2
},
{
"LAY_TABLE_INDEX": 5,
"accountPerType": 1,
"createTime": "2019-12-19 10:56:44",
"createUser": "8",
"id": 108,
"mergeFlag": 1,
"onlineFlag": 0,
"querySql": "select id,type,mjnumber,source,sum,secussssum,secusslv,descf from hsop_test order by id",
"reportBore": "dddd",
"reportName": "wenjinhong",
"reportType": "1",
"tableHeaderLevel": 2
}
]
for (var item in data) {
console.log(data[item]);
console.log(data[item].id);
}
View Code
结果: