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我不明白爲什麼下面的代碼在標題中產生錯誤。我檢查了類似的問題,但我沒有發現它們有幫助。反應:Uncaught不變違規:ReactDOM.render():無效的組件元素
import React from 'react';
import ReactDOM from 'react-dom';
import { Router, Route, IndexRoute, browserHistory } from 'react-router';
import { createHashHistory } from 'history';
import Menu from './pages/Menu';
import BookShelf from './pages/BookShelf';
import BorrowBook from './pages/BorrowBook';
const App = React.createClass({
contextTypes: {
router: React.PropTypes.object.isRequired
},
render() {
return (
<Menu />
);
}
});
ReactDOM.render((
<Router history={browserHistory} onUpdate={() => window.scrollTo(0, 0)}>
<Route path="/" component={App}/>
<Route path="/menu" component={Menu} />
<Route path="/bookshelf" component={BookShelf} />
<Route path="/borrowbook/:bookId" component={BorrowBook} />
</Router>,
document.getElementById('app')
));
爲什麼在ReactDOM.render的兩個參數周圍都有一對額外的括號? –
正如@Liongold所說,你的parens在錯誤的地方,所以你通過一個參數而不是2. – azium
哦,狗屎,謝謝 – hellogoodnight