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創(chuàng)建空構(gòu)造函數(shù)并在類中初始化數(shù)組時(shí)出現(xiàn)問題

JavaScript

哈士奇WWW 2023-04-27 10:23:24

我之前嘗試過在構(gòu)造函數(shù)之后移動(dòng)數(shù)組。我很確定此時(shí)我的語法錯(cuò)誤，我已經(jīng)嘗試研究了很長一段時(shí)間但沒有運(yùn)氣。任何幫助，將不勝感激。class dataService { constructor() { } //I need to be able to initialize this array of objects and create an empty constructor which does nothing var data = [ // Error: Construcotr, method, accessor, or property was expected name1 = { name: "Mitchell", gender: "male", address: "201 Burns Street East", age: 20, phoneNumber: "905-550-7379" }, name2 = { name: "Bob", gender: "male", address: "555 Hello Street", age: 25, phoneNumber: "123-456-7891" }, name3 = { name: "Gillian", gender: "female", address: "457 Baker Street", age: 23, phoneNumber: "555-111-999" }];getData(numRecords) { numRecords = numRecords || undefined; if (numRecords == undefined) { return data; }};}

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1 回答

Helenr

TA貢獻(xiàn)1780條經(jīng)驗(yàn) 獲得超4個(gè)贊

嘿，我的朋友，你在如何定義類的屬性方面有幾個(gè)錯(cuò)誤，我建議你查看 javascript 類

首先你在數(shù)組定義上有錯(cuò)誤，這是正確的方法：

??this.data?=?[?
??{?name:?"Mitchell",?gender:?"male",?address:?"201?Burns?Street?East",?age:?20,?phoneNumber:?"905-550-7379"?},
???{?name:?"Bob",?gender:?"male",?address:?"555?Hello?Street",?age:?25,?phoneNumber:?"123-456-7891"?},
??{?name:?"Gillian",?gender:?"female",?address:?"457?Baker?Street",?age:?23,?phoneNumber:?"555-111-999"?}
];

其次，您可以在構(gòu)造函數(shù)上初始化數(shù)組并使用“this”關(guān)鍵字分配給類。

反對回復(fù) 2023-04-27