Javascript 反应错误“道具类型失败：提供给“提供者”的道具“儿童”无效，需要一个 ReactElement”
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React error 'Failed propType: Invalid prop `children` supplied to `Provider`, expected a single ReactElement'
提问by modernator
i have some problem with React.js. this is my code:
我对 React.js 有一些问题。这是我的代码：
import React from 'react';
import { createStore } from 'redux';
import { Provider } from 'react-redux';
import App from './containers/App';
import todoApp from './reducers';
let store = createStore(todoApp);
let rootElement = document.getElementById('root');
React.render(
<Provider store={store}>
{() => <App />}
</Provider>,
rootElement
);
and runs the page, it saids:
并运行页面，它说：
Failed propType: Invalid prop
childrensupplied toProvider, expected a single ReactElement
失败的 propType：
children向 提供了无效的 propProvider，需要一个 ReactElement
this is the list of my related installed node modules:
这是我安装的相关节点模块的列表：
- react 15.0.1
- react-redux 4.4.5
- redux 3.4.0
- 反应 15.0.1
- 反应-redux 4.4.5
- 还原 3.4.0
actually, i am currently learning React with Redux, so it is hard to me how should i do. i just followed tutorial on website(i can give a link, but it is not english) but it is just not working with that error message. as i searched, someone said upgrade version of react and react-redux, but i installed latest versions. any advice will be very appreciate it.
实际上，我目前正在使用 Redux 学习 React，所以我很难怎么做。我只是按照网站上的教程（我可以提供链接，但它不是英文的）但它只是无法处理该错误消息。当我搜索时，有人说升级版 react 和 react-redux，但我安装了最新版本。任何建议将不胜感激。
采纳答案by wuct
According to the doc, you can just use a normal React element instead of a function inside <Provider />.
根据文档，您可以只使用普通的 React 元素而不是内部的函数<Provider />。
As a result, simply change your code to
因此，只需将您的代码更改为
<Provider store={store}>
<App />
</Provider>
I think this has changed since [email protected].
我认为自 [email protected] 以来这已经发生了变化。
回答by nick rodriguez
The original question had a typo. Your response is correct in the proper syntax.
最初的问题有一个错字。您的回复在正确的语法中是正确的。
However, the direct reason is that <App />needs to be on a separate line.
但是，直接原因是<App />需要在单独的行上。
If you put it on the same line as <Provider store={store}>React/Redux tries to do more with it than it should.
如果你把它和<Provider store={store}>React/Redux放在同一行，尝试用它做比它应该做的更多的事情。
ReactDOM.render(
<Provider store={store}>
<App />
</Provider>,
document.getElementById('root')
);
回答by str8up7od
I was brought to this and I simply forgot to provide a prop. I would say make sure that you are providing allthe props that your component is using and that shouldfix it.
我被带到这里，我只是忘了提供道具。我会说确保你提供了你的组件正在使用的所有道具，并且应该修复它。
