首頁猿問 JavaScript...

JavaScript 按特定常量值對多個屬性上的對象數組進行排序

JavaScript

holdtom 2023-07-29 15:50:35

給定一個像這樣的對象：accounts = [? { bankType: "Checking", currency: "USD", amount: 123.45 },? { bankType: "Saving", currency: "CAD", amount: 1.95 },? { bankType: "Saving", currency: "USD", amount: 23.31 },? { bankType: "Checking", currency: "CAD", amount: 1953.1 },];如何按數組中的對象屬性進行排序，其中bankType先"Checkings"排序，然后再排序currency帳戶"CAD"，以獲得下面的結果？// Sorted array of objects result[? { bankType: "Checking", currency: "CAD", amount: 1953.1 },? { bankType: "Checking", currency: "USD", amount: 123.45 },? { bankType: "Saving", currency: "CAD", amount: 1.95 },? { bankType: "Saving", currency: "USD", amount: 23.31 },];問題不在于使用內置localeCompare函數按字母順序對其進行排序，問題在于必須按Checking第一個然后按CAD第二個的特定常量值進行排序。

查看完整描述

3 回答

慕容708150

TA貢獻1831條經驗獲得超4個贊

有積分系統

Checking = 2

CAD = 1

console.log(

[

{ bankType: "Checking", currency: "USD", amount: 123.45 },

{ bankType: "Saving", currency: "CAD", amount: 1.95 },

{ bankType: "Saving", currency: "USD", amount: 23.31 },

{ bankType: "Checking", currency: "CAD", amount: 1953.1 },

]

.sort((a, b) => {

const pointsA = (a.bankType === "Checking" ? 2 : 0) + (a.currency === "CAD" ? 1 : 0);

const pointsB = (b.bankType === "Checking" ? 2 : 0) + (b.currency === "CAD" ? 1 : 0);

return pointsB - pointsA;

})

);

反對回復 2023-07-29

慕無忌1623718

TA貢獻1744條經驗獲得超4個贊

您可以按順序比較兩者：

accounts.sort((a, b) =>
    a.bankType.localeCompare(b.bankType) || a.currency.localeCompare(b.currency)
);

反對回復 2023-07-29

手掌心

TA貢獻1942條經驗獲得超3個贊

使用Array.prototype.sort和String.prototype.localeCompare，您可以對它們進行排序。

const accounts = [

{ bankType: "Checking", currency: "USD", amount: 123.45 },

{ bankType: "Saving", currency: "CAD", amount: 1.95 },

{ bankType: "Saving", currency: "USD", amount: 23.31 },

{ bankType: "Checking", currency: "CAD", amount: 1953.1 },

];

const output = accounts.sort((a, b) => {

const bankCompare = a.bankType.localeCompare(b.bankType);

if (bankCompare === 0) {

return a.currency.localeCompare(b.currency);

}

return bankCompare;

});

console.log(output);

反對回復 2023-07-29

3 回答
0 關注
178 瀏覽

關注

添加回答

舉報

0/150

提交

取消

亚洲在线久爱草,狠狠天天香蕉网,天天搞日日干久草,伊人亚洲日本欧美

熱搜

最近搜索清空

JavaScript 按特定常量值對多個屬性上的對象數組進行排序

JavaScript 按特定常量值對多個屬性上的對象數組進行排序

3 回答

添加回答