谁可以通过嵌套对象进行映射并删除JavaScript中的键值对
我有一个array对象，我正在尝试创建一个新对象，但其中没有一key:value对特定对象。这是我的对象。
{
"versionRoomPoolList": [{
"pmsRoomType": ["CITY"],
"versionRoomTypeAttributeList": [{
"attributeDisplayId": 2,
"attributeStatus": "NOCHANGE",
"attributeCode": "CV",
"attributeDescription": "City View"
},
{
"attributeDisplayId": 6,
"attributeStatus": "NOCHANGE",
"attributeCode": "HF",
"attributeDescription": "High Floor, 8th floor and above"
},
{
"attributeDisplayId": 4,
"attributeStatus": "NOCHANGE",
"attributeCode": "KN",
"attributeDescription": "1 King Bed"
},
{
"attributeDisplayId": 5,
"attributeStatus": "NOCHANGE",
"attributeCode": "NE",
"attributeDescription": "Near Elevator"
},
{
"attributeDisplayId": 7,
"attributeStatus": "NOCHANGE",
"attributeCode": "RF",
"attributeDescription": "Mobile Lock"
},
{
"attributeDisplayId": 3,
"attributeStatus": "NOCHANGE",
"attributeCode": "SB",
"attributeDescription": "Sofabed"
},
所以我想做的是删除pmsRoomType每个对象中的。
这是我为尝试解决此问题而编写的更大方法的一部分所写的内容。
var data = {
versionRoomPoolList: array.map(roompools, function(roompool) {
roompool = lang.mixin({}, roompool);
delete roompool.numAttributeChars;
delete roompool.pmsRoomType;
delete roompool.versionRoomTypeList[0].pmsRoomType;
return roompool;
})
};
但是我一直收到以下错误：
Uncaught TypeError: Cannot read property '0' of undefined
我假设我需要编写另一种.map方法，但是我仍然坚持这样做，或者这是正确的方法吗？
HUX布斯浏览 190回答 3
3回答
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弑天下
您的数据不是数组，而是具有versionRoomPoolList字段的对象。map 函数按顺序对数组中的每个元素调用提供的回调函数一次，然后从结果中构造一个新的数组。我想这就是您要寻找的东西：创建新对象（data），将其versionRoomPoolList作为键，并将新数组作为值。var rawData = { "versionRoomPoolList": [ { "pmsRoomType": [ "CITY" ], "versionRoomTypeAttributeList": [ { "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "NE", "attributeDescription": "Near Elevator" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "SU", "attributeDescription": "Alpine Guest Room" }, { "attributeDisplayId": 8, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 31, "roomTypeId": 21, "roomTypeStatus": "NOCHANGE", "roomPool": "CITY", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 12, "currentCapacity": 12, "guaranteed": 9, "minAvailability": 1, "premium": false, "eliteAvailability": false, "isROH": false }, { "versionRoomTypeList": [ { "pmsRoomType": [ "HOSP" ], "versionRoomTypeAttributeList": [ { "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 34, "roomTypeId": 24, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": true }, { "pmsRoomType": [ "HOSP" ], "versionRoomTypeAttributeList": [ { "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "NE", "attributeDescription": "Near Elevator" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 8, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 35, "roomTypeId": 25, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": false } ], "roomPoolDisplayId": 4, "roomPoolStatus": "NOCHANGE", "roomPoolCode": "HOSP", "miosSRC": "YD", "sna": "N", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 2, "currentCapacity": 2, "premium": true, "eliteAvailability": false, "excludeAlways": false, "excludeOverAuth": false, "propertySellOnly": false }, { "pmsRoomType": [ "HOSP" ], "versionRoomTypeAttributeList": [ { "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 34, "roomTypeId": 24, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": true } ]}var data = { versionRoomPoolList: rawData.versionRoomPoolList.map(function(roompool) { roompool = Object.assign({}, roompool); delete roompool.numAttributeChars; delete roompool.pmsRoomType; // make sure `versionRoomTypeList` is existed roompool.versionRoomTypeList && delete roompool.versionRoomTypeList[0].pmsRoomType; return roompool; })};console.log(data) -
鸿蒙传说
您可以尝试如下操作：const data = { "versionRoomPoolList": [{ "pmsRoomType": ["CITY"], "versionRoomTypeAttributeList": [{ "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "NE", "attributeDescription": "Near Elevator" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "SU", "attributeDescription": "Alpine Guest Room" }, { "attributeDisplayId": 8, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 31, "roomTypeId": 21, "roomTypeStatus": "NOCHANGE", "roomPool": "CITY", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 12, "currentCapacity": 12, "guaranteed": 9, "minAvailability": 1, "premium": false, "eliteAvailability": false, "isROH": false }, { "versionRoomTypeList": [{ "pmsRoomType": ["HOSP"], "versionRoomTypeAttributeList": [{ "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 34, "roomTypeId": 24, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": true }, { "pmsRoomType": ["HOSP"], "versionRoomTypeAttributeList": [{ "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "NE", "attributeDescription": "Near Elevator" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 8, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 35, "roomTypeId": 25, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": false } ], "roomPoolDisplayId": 4, "roomPoolStatus": "NOCHANGE", "roomPoolCode": "HOSP", "miosSRC": "YD", "sna": "N", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 2, "currentCapacity": 2, "premium": true, "eliteAvailability": false, "excludeAlways": false, "excludeOverAuth": false, "propertySellOnly": false }, { "pmsRoomType": ["HOSP"], "versionRoomTypeAttributeList": [{ "attributeDisplayId": 2, "attributeStatus": "NOCHANGE", "attributeCode": "CV", "attributeDescription": "City View" }, { "attributeDisplayId": 5, "attributeStatus": "NOCHANGE", "attributeCode": "HF", "attributeDescription": "High Floor, 8th floor and above" }, { "attributeDisplayId": 1, "attributeStatus": "NOCHANGE", "attributeCode": "HS", "attributeDescription": "Hospitality Suite" }, { "attributeDisplayId": 4, "attributeStatus": "NOCHANGE", "attributeCode": "KN", "attributeDescription": "1 King Bed" }, { "attributeDisplayId": 6, "attributeStatus": "NOCHANGE", "attributeCode": "RF", "attributeDescription": "Mobile Lock" }, { "attributeDisplayId": 3, "attributeStatus": "NOCHANGE", "attributeCode": "SB", "attributeDescription": "Sofabed" }, { "attributeDisplayId": 7, "attributeStatus": "NOCHANGE", "attributeCode": "TS", "attributeDescription": "Separate Shower and Bathtub" } ], "roomTypeDisplayId": 34, "roomTypeId": 24, "roomTypeStatus": "NOCHANGE", "roomPool": "HOSP", "maxOccupancyStatus": "NOCHANGE", "newMaxOccupancy": 4, "currentMaxOccupancy": 4, "capacityStatus": "NOCHANGE", "newCapacity": 1, "currentCapacity": 1, "guaranteed": 1, "minAvailability": 1, "premium": true, "eliteAvailability": false, "isROH": true } ]}const myFunction = data => ({ ...data, versionRoomPoolList: data.versionRoomPoolList.filter(i => { delete i.pmsRoomType; return i; }),});console.log(myFunction(data)) -
守候你守候我
您的代码大部分是正确的，并且正如Felix Kling在您的帖子中评论的那样，您只需要防止出现不存在的属性即可。这可以很简单：if (roompool.versionRoomTypeList && roompool.versionRoomTypeList.length) { // delete}就是说...我怀疑您只是打字错误，您应该更改versionRoomTypeList为versionRoomTypeAttributeList:-P
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