您好,我在组件之间传递props 时遇到困难.我不能分享确切的代码,所以我做了一个简化版.我没有收到任何控制台错误,尽管登录显然是"未定义的",任何洞察力都是值得感谢的!
App.js
import React, { useState } from "react";
function App() {
const [login, setLogin] = useState('Jpm91297');
const changeState = () => {
const newLogin = document.getElementById('loginData').value;
setLogin(newLogin);
}
return (
<>
<h1>Fancy API Call!!!</h1>
<form onSubmit={() => changeState()}>
<input type='text' id='loginData'></input>
<button>Submit</button>
</form>
</>
);
}
export default App;
Api.Js个
import React, {useEffect, useState} from "react";
const Api = ( { login } ) => {
const [data, setData] = useState(null);
useEffect(() => {
fetch(`https://api.github.com/users/${login}`)
.then((res) => res.json())
.then(setData);
}, []);
if (data) {
return <div>{JSON.stringify(data)}</div>
}
return <div>No data Avail</div>
}
export default Api;
Index.js个
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import Api from './api'
ReactDOM.render(
<>
<App />
<Api />
</>,
document.getElementById('root')
);