javascript - react : How to render API response data in fromat of data: Array(i) to react front end?

Question

我需要检索names of the books written by a particular author ，其中author name通过get提供要求。

我的 API 工作正常并检索相关数据。在这种情况下，我收到 more than one book 的 API 响应 JSON 。

API 响应 JSON:

[
    {
        "_id": "5cf40d9d74df260aa460a74b",
        "name": "Oliver Twist",
        "author": "Charles Dickens",
        "yearOfPublication": "1839",
        "__v": 0
    },
    {
        "_id": "5cf4115b4b557126a02c6087",
        "name": "David Copperfield ",
        "author": "Charles Dickens",
        "yearOfPublication": "1850",
        "__v": 0
    },
    {
        "_id": "5cf412c54b557126a02c6088",
        "name": "A Christmas Carol ",
        "author": "Charles Dickens",
        "yearOfPublication": "1843",
        "__v": 0
]

我尝试过使用const books = this.state.data.toString();并通过{books.name}访问书名，但它不输出书名。然而，当我 console.log() ，response.data也成功输出相关数据为:

0: {_id: "5cf40d9d74df260aa460a74b", name: "Oliver Twist", author: "Charles Dickens", …}
1: {_id: "5cf4115b4b557126a02c6087", name: "David Copperfield ", author: "Charles Dickens", …}
2: {_id: "5cf412c54b557126a02c6088", name: "A Christmas Carol ", author: "Charles Dickens", …}

任何人都可以建议一种合适的方法来输出这些值以对前端使用react吗？提前致谢。

Answer 1

您不需要 .toString()。

由于您有任何数组，因此您需要指定所需的元素或映射到数组。

console.log(this.state.data[0].name);

// or to log all names
this.state.data.map(item => console.log(item.name));