我收到此错误:
Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.
这是我的代码:
var React = require('react') var ReactDOM = require('react-dom') var Router = require('react-router') var Route = Router.Route var Link = Router.Link var App = React.createClass({ render() { return ( <div> <h1>App</h1> <ul> <li><Link to="/about">About</Link></li> </ul> </div> ) } }) var About = require('./components/Home') ReactDOM.render(( <Router> <Route path="/" component={App}> <Route path="about" component={About} /> </Route> </Router> ), document.body)
我的Home.jsx文件:
Home.jsx
var React = require('react'); var RaisedButton = require('material-ui/lib/raised-button'); var Home = React.createClass({ render:function() { return ( <RaisedButton label="Default" /> ); }, }); module.exports = Home;
在我的情况下( 使用 Webpack ),这是以下之间的区别:
import {MyComponent} from '../components/xyz.js';
对比
import MyComponent from '../components/xyz.js';
第二个有效,而第一个导致错误。或者相反。