如何使用react安全地在typescript中定義一個Array數組

Question

我有一個充滿對象的數組數組，例如如下所示

const array1: 
       any[] = 
            [
            {firstName: "John", lastName: "Doe"},
            {firstName: "Jane", lastName: "Doe"},
       ],
       [
            {firstName: "John", lastName: "Doe"},
       ],
       [
            {firstName: "Jane", lastName: "Doe"},
       ]
]

我們確實有使用“any”的類型限制。

所以想知道定義array1類型的更好方法是什么。

Answer 1

為person對象創建一個接口（如果你還沒有），然后使用它

interface Person {
  firstName: string,
  lastName: string,
}

const array1: Person[][] = [[
  {firstName: "John", lastName: "Doe"},
  {firstName: "Jane", lastName: "Doe"},
], [
  {firstName: "John", lastName: "Doe"},
], [
  {firstName: "Jane", lastName: "Doe"},
]];