因此，我正在努力获取名为的数据otherPartyName。这些数据是从WebAPI提取的，并存储在称为的本地状态中dataSource。我正在使用本机反应，想检查最新的createdBy是否等于otherPartyName。我可以获取的名称createdBy，但是由于不断获取，所以无法获取otherPartyName的值undefined。
数据源
Array [
Object {
"comment": "Min vintage",
"feedbackId": 32,
"otherPartyName": "DooDooDooDooDoo",
"replies": Array [
Object {
"comments": "Bruh ",
"createdBy": "Min Cunt",
"feedbackLogId": 32,
"feedbackReplyLogId": 4,
},
Object {
"comments": "So this is 1",
"createdBy": "Min Cunt",
"feedbackLogId": 32,
"feedbackReplyLogId": 5,
},
],
"sender": "43434343",
"type": "Improvement",
},
]
这就是我如何获得最新的价值createdBy。
let totalCount = dataSource.reduce((a, c) => a + c.replies.length, 0);
let reply = dataSource.map(({ replies }) => replies[totalCount - 1].createdBy)
但是无论我做什么，我都无法为otherPartyName定义
let otherParty = dataSource.otherPartyName
let otherParty = dataSource[0].otherPartyName
let otherParty = dataSource.map(({ otherParty }) => otherParty.otherPartyName)
如果我这样做console.log(dataSource)，我可以得到上面显示的dataSource作为结果，但是如果我这样做，为什么我会变得未定义console.log(dataSource.otherPartyName)
您可以otherPartyName使用Array.prototype.map（）获得一个数组：
const dataSource = [{ "comment": "Min vintage", "feedbackId": 32, "otherPartyName": "DooDooDooDooDoo", "replies": [{ "comments": "Bruh ", "createdBy": "Min Cunt", "feedbackLogId": 32, "feedbackReplyLogId": 4, }, { "comments": "So this is 1", "createdBy": "Min Cunt", "feedbackLogId": 32, "feedbackReplyLogId": 5, }], "sender": "43434343", "type": "Improvement", }]
const otherPartyNames = dataSource.map(ds => ds.otherPartyName)
console.log(otherPartyNames)本文收集自互联网，转载请注明来源。
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我来说两句