Javascript 通过澄清的洛达斯差异
我有两个对象数组,我想通过Javascript 通过澄清的洛达斯差异,javascript,reactjs,react-native,lodash,Javascript,Reactjs,React Native,Lodash,我有两个对象数组,我想通过identifier查找newData和oldData数组之间的差异,显示差异,其中oldData的标识符不同于newData数组,以下是我的数组: const newData = [ { "extras": {}, "identifier": "13", "latitude": 39.13063, "loiteringDelay": 1000, "longitude": -86.5
identifier
查找newData和oldData数组之间的差异,显示差异,其中oldData的标识符不同于newData数组,以下是我的数组:
const newData = [
{
"extras": {},
"identifier": "13",
"latitude": 39.13063,
"loiteringDelay": 1000,
"longitude": -86.58286,
"notifyOnDwell": false,
"notifyOnEntry": true,
"notifyOnExit": true,
"radius": 30,
},
{
"extras": {},
"identifier": "18",
"latitude": 39.13063,
"loiteringDelay": 1000,
"longitude": -86.58286,
"notifyOnDwell": false,
"notifyOnEntry": true,
"notifyOnExit": true,
"radius": 30,
}
]
const oldData = [
{
"identifier": "13",
"latitude": 39.13063,
"loiteringDelay": 1000,
"longitude": -86.58286,
"notifyOnDwell": false,
"notifyOnEntry": true,
"notifyOnExit": true,
"radius": 30,
},
{
"identifier": "12",
"latitude": 39.13063,
"loiteringDelay": 1000,
"longitude": -86.58286,
"notifyOnDwell": false,
"notifyOnEntry": true,
"notifyOnExit": true,
"radius": 30,
}
]
下面是我正在做的:
let testDifference = _.differenceBy(newData, oldData, "identifier")
我的期望,我会得到
[
{
"identifier": "12",
"latitude": 39.13063,
"loiteringDelay": 1000,
"longitude": -86.58286,
"notifyOnDwell": false,
"notifyOnEntry": true,
"notifyOnExit": true,
"radius": 30,
},
]
实际上,我得到的是空数组,我做错了什么?如何使其正确工作 我认为您只需将前两个参数切换到
differenceBy
,即可获得预期的结果。您可以将其视为第一个数组项,第二个数组项除外。
const newData=[{
“临时演员”:{},
“标识符”:“13”,
“纬度”:39.13063,
“游荡延迟”:1000,
“经度”:-86.58286,
“notifyOnDwell”:错误,
“尝试”:正确,
“notifyOnExit”:正确,
“半径”:30,
}]
常数数据=[{
“标识符”:“13”,
“纬度”:39.13063,
“游荡延迟”:1000,
“经度”:-86.58286,
“notifyOnDwell”:错误,
“尝试”:正确,
“notifyOnExit”:正确,
“半径”:30,
},
{
“标识符”:“12”,
“纬度”:39.13063,
“游荡延迟”:1000,
“经度”:-86.58286,
“notifyOnDwell”:错误,
“尝试”:正确,
“notifyOnExit”:正确,
“半径”:30,
}
];
让whatDelete=u.differenceBy(oldData,newData,“identifier”);
控制台日志(whatDelete)代码>
奇怪,我先试了一下,但没用。我一定是打错了什么东西。