我正在使用 React 和 TypeScript 處理 Pokeapi。在獲取數據以在一側顯示所有 Pokemon 時,一切正常。但是當單擊特定的口袋妖怪以顯示其詳細信息時,我收到 2 個錯誤。
更新:已修復!#1 錯誤:我不能使用 {match},因為模塊 '"react-router-dom"' 沒有導出成員 'RouteComponentProps'。幾個月前我在 ReactJS 項目中使用了它,一切正常。
#2 錯誤:當映射拋出每個 Pokemon 時,會出現錯誤 pokemonDetails.map is not a function,而在另一個組件中使用 map 時(在一頁上顯示所有 Pokemon),一切正常。
這是我使用路由器的App.js 組件:
import Pokedex from './Pokedex';
import Pokemon from './Pokemon';
import { Route, Routes } from 'react-router-dom';
function App() {
return (
<Routes>
<Route path='/' element={<Pokedex />} />
<Route path='/pokemon/:id' element={<Pokemon />} />
</Routes>
);
}
export default App;
這是我的Pokedex 組件(在一側顯示所有 Pokemon):
import { useEffect, useState } from 'react';
import Container from 'react-bootstrap/Container';
import Col from 'react-bootstrap/Col';
import Row from 'react-bootstrap/Row';
const Pokedex = () => {
const [pokemon, setPokemon] = useState([]);
const [loading, setLoading] = useState(true);
useEffect(() => {
getPokedex();
}, []);
const getPokedex = async () => {
try {
const res = await fetch('https://pokeapi.co/api/v2/pokemon?limit=151');
const { results } = await res.json();
const pokedex = results.map((pokemon: any, index: number) => {
const paddedId = ('00' + (index + 1)).slice(-3);
const image = `https://assets.pokemon.com/assets/cms2/img/pokedex/detail/${paddedId}.png`;
return { ...pokemon, image };
});
setPokemon(pokedex);
setLoading(false);
} catch (err) {
console.error(err);
}
};
return (
<Container>
{loading ? (
'Fetching Pokemon...'
) : (
<Row>
{pokemon.map((pokemon: any, index: number) => (
<Col key={index} xs={1} sm={1} md={1} lg={1} xl={1}>
<a href={`/pokemon/${index + 1}`}>
<img src={pokemon.image} alt={pokemon.name} />
<p>
{index + 1}.<span>{pokemon.name}</span>
</p>
</a>
</Col>
))}
</Row>
)}
</Container>
);
};
export default Pokedex;
更新:這是Pokemon 組件(用於顯示每個 Pokemon 的詳細信息):
import { useEffect, useState } from 'react';
import Container from 'react-bootstrap/Container';
import { useParams } from 'react-router-dom';
const Pokemon = () => {
const [pokemonDetails, setPokemonDetails] = useState();
const [loading, setLoading] = useState(true);
const { id } = useParams();
useEffect(() => {
getPokemon(id);
}, [id]);
const getPokemon = async (id: string | undefined) => {
try {
const res = await fetch(`https://pokeapi.co/api/v2/pokemon/${id}`);
const pokemon = await res.json();
const paddedId = ('00' + id).slice(-3);
pokemon.image = `https://assets.pokemon.com/assets/cms2/img/pokedex/detail/${paddedId}.png`;
setPokemonDetails(pokemon);
setLoading(false);
} catch (err) {
console.error(err);
}
};
return (
<Container>
<h1>Pokemon</h1>
{loading ? (
'Fetching Pokemon...'
) : (
<div>
<h2>{pokemonDetails.name}</h2>
<h2>{pokemonDetails.id}</h2>
<img src={pokemonDetails.image} alt={pokemon.Detailsname} />
<p>
{pokemonDetails.types.map((type: any, index: number) => (
<p key={index}>{type.type.name}</p>
))}
</p>
</div>
)}
</Container>
);
};
export default Pokemon;
帶有“id”的 API 應該返回這個https://pokeapi.co/api/v2/pokemon/1
這是我的package.json 文件,以防您需要它:
"name": "pokemon",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^5.16.0",
"@testing-library/react": "^11.2.7",
"@testing-library/user-event": "^12.8.3",
"@types/jest": "^27.0.3",
"@types/node": "^16.11.11",
"@types/react": "^17.0.37",
"@types/react-dom": "^17.0.11",
"@types/react-router-dom": "^5.3.2",
"axios": "^0.24.0",
"bootstrap": "^5.1.3",
"react": "^17.0.2",
"react-bootstrap": "^2.0.3",
"react-dom": "^17.0.2",
"react-router-dom": "^6.0.2",
"react-scripts": "4.0.3",
"typescript": "^4.5.2",
"web-vitals": "^1.1.2"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
}
}
在react-router-dom
V6不再有路線道具(即無history
,location
或match
道具),如Route
曾在RRDv5組件。在 v6 中,您應該使用 React 鉤子來訪問匹配路由的匹配參數。
使用Link
組件而不是原始錨 ( <a />
) 標籤鏈接到特定的 Pokemon 頁面。
import { Link } from 'react-router-dom';
...
{pokemon.map((pokemon: any, index: number) => (
<Col key={index} xs={1} sm={1} md={1} lg={1} xl={1}>
<Link to={`/pokemon/${index + 1}`}>
<img src={pokemon.image} alt={pokemon.name} />
<p>
{index + 1}.<span>{pokemon.name}</span>
</p>
</Link>
</Col>
))}
使用useParams
鉤子id
從路徑中獲取匹配的匹配參數。
import { useParams } from 'react-router-dom';
const Pokemon = () => {
const [pokemonDetails, setPokemonDetails] = useState([]);
const [loading, setLoading] = useState(true);
const { id } = useParams();
useEffect(() => {
getPokemon(id);
}, [id]);
const getPokemon = async (id: number) => {
try {
const res = await fetch(`https://pokeapi.co/api/v2/pokemon/${id}`);
const pokemon = await res.json();
const paddedId = ('00' + id).slice(-3);
pokemon.image = `https://assets.pokemon.com/assets/cms2/img/pokedex/detail/${paddedId}.png`;
setPokemonDetails(pokemon);
setLoading(false);
} catch (err) {
console.error(err);
}
};
return (
...
);
};
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