我很想知道为什么它在其他任何东西之前给出这个“。/undefined. jpg”,只有在那之后,才呈现所有的实际路径。
import { useState, useEffect } from 'react';
import { Link } from 'react-router-dom';
import axios from 'axios';
import style from './CarsListPage.module.scss';
//import cars from './car-content';
import CarsList from '../components/CarsList';
const CarsListPage = () => {
const [carsInfo, setCarsInfo] = useState([{}]);
useEffect(() => {
const loadCarsInfo = async () => {
const response = await axios.get('/api/cars');
const newCarsInfo = response.data;
setCarsInfo(newCarsInfo);
};
loadCarsInfo();
}, []);
return (
<div className={style.mainCotainer}>
<main className={style.main}>
<h1>Cars</h1>
<div className={style.container}>
{carsInfo.map((car) => (
<Link to={`/cars/${car.name}`} key={car.id}>
<div className={style.card} key={car.id}>
<h3>{car.name}</h3>
{/* {console.log(`../temp-img/${car.title}.jpg`)} */}
<p>{car.body_type}</p>
<p>{car.origin}</p>
<p>{car.year}</p>
<img
src={require(`../temp-img/${car.title}.jpg`)}
alt={car.name}
style={{ width: '200px' }}
/>
</div>
</Link>
))}
</div>
</main>
</div>
);
};
export default CarsListPage;
我已经找到了一些解决方案,比如把所有东西都 Package 成div,然后检查值是否存在,但是我不能为我的代码优化它。
1条答案
按热度按时间yshpjwxd1#
将
carsInfo
的默认状态更改为[]
,否则将Map到空对象,直到从API获取数据: