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按字段值對數組進行分組并將分組值推送到數組中

JavaScript

慕容森 2021-06-28 14:23:29

我有一個數組：let docArray = [ { documentID: 304717110, doublettenID: 111, done: true }, { documentID: 304717110, doublettenID: 222, done: true }, { documentID: 304717110, doublettenID: 333, done: true }, { documentID: 304717110, doublettenID: 444, done: true }, { documentID: 304717110, doublettenID: 555, done: true }, { documentID: 304717110, doublettenID: 666, done: true }, { documentID: 304862280, doublettenID: null, done: true }, { documentID: 304862281, doublettenID: null, done: true }, { documentID: 304933685, doublettenID: null, done: true }, { documentID: 304933871, doublettenID: null, done: true }, { documentID: 304933870, doublettenID: null, done: true }, { documentID: 304862282, doublettenID: null, done: true } ]我想按 documentID 分組，并為每個不同的 documentID 創建一個對象，并將“doublettenID”字段值推送到每個對象的數組中。我怎樣才能輕松做到這一點？

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3 回答

呼如林

TA貢獻1798條經驗獲得超3個贊

這是一種方法，我不確定這是否是您需要的對象格式。

let docArray = [

{ documentID: 304717110, doublettenID: 111, done: true },

{ documentID: 304717110, doublettenID: 222, done: true },

{ documentID: 304717110, doublettenID: 333, done: true },

{ documentID: 304717110, doublettenID: 444, done: true },

{ documentID: 304717110, doublettenID: 555, done: true },

{ documentID: 304717110, doublettenID: 666, done: true },

{ documentID: 304862280, doublettenID: null, done: true },

{ documentID: 304862281, doublettenID: null, done: true },

{ documentID: 304933685, doublettenID: null, done: true },

{ documentID: 304933871, doublettenID: null, done: true },

{ documentID: 304933870, doublettenID: null, done: true },

{ documentID: 304862282, doublettenID: null, done: true }

]

var ids = []

var res = []

docArray.forEach(doc => {

if (!ids.includes(doc.documentID)) {

doc.doublettenID = [doc.doublettenID]

res.push(doc)

ids.push(doc.documentID)

} else {

res.find(d => doc.documentID = d.documentID).doublettenID.push(doc.doublettenID)

}

})

console.log(res)

反對回復 2021-07-01

紅糖糍粑

TA貢獻1815條經驗獲得超6個贊

您可以遍歷它并將documentID用作鍵，然后推送到一個單獨的對象。

let docArray = [

{ documentID: 304717110, doublettenID: 111, done: true },

{ documentID: 304717110, doublettenID: 222, done: true },

{ documentID: 304717110, doublettenID: 333, done: true },

{ documentID: 304717110, doublettenID: 444, done: true },

{ documentID: 304717110, doublettenID: 555, done: true },

{ documentID: 304717110, doublettenID: 666, done: true },

{ documentID: 304862280, doublettenID: null, done: true },

{ documentID: 304862281, doublettenID: null, done: true },

{ documentID: 304933685, doublettenID: null, done: true },

{ documentID: 304933871, doublettenID: null, done: true },

{ documentID: 304933870, doublettenID: null, done: true },

{ documentID: 304862282, doublettenID: null, done: true }

];

let groups = {};

docArray.forEach(entry => {

if (!groups.hasOwnProperty(entry.documentID)) {

groups[entry.documentID] = [];

}

groups[entry.documentID].push(entry.doublettenID);

});

console.log(groups);

反對回復 2021-07-01

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按字段值對數組進行分組并將分組值推送到數組中

按字段值對數組進行分組并將分組值推送到數組中

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