Question

所以我有相当标准的代码仍然无法正常工作。这里有什么问题？

我尝试了这个解决方案，因为我有同样的错误：solution，但没有成功。我在浏览器控制台中的错误仍然是：

Warning: React.createElement: type should not be null, undefined, boolean, or number. It should be a string (for DOM elements) or a ReactClass (for composite components)

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.

我的代码是：

var React = require('react');
var ReactDOM = require('react-dom');
var Router = require('react-router').Router;
var Route = require('react-router').Route;
var createBrowserHistory = require('history/lib/createBrowserHistory');
var createStore = require('redux').createStore;
var Provider = require('react-redux');
var connect = require('react-redux').connect;

var options = 'someTxt';

var reducer = function (state = {}, action) {
    console.log('reducer was called with state', state, 'and action', action)
    return state;
};

const store = createStore(reducer, options);

function mapStateToProps(state) {
    return {options: state.options};
};

var Index = React.createClass({
    render: function () {
        return (
            <div>
                {this.props.options}
            </div>
        );
    }
});

connect(mapStateToProps, {
    test: () => { type: 'TEST_ACTION' }
})(Index);

ReactDOM.render(
    <Provider store={store}>
        {() =>
            <Router history={createBrowserHistory()}>
                <Route path="/" component={Index}/>
            </Router>}
    </Provider>,
    document.getElementById("container")
);

__________ UPDATE__________ 还请阅读评论，确实有用的信息

Answer 1

Provider是react-redux模块的一部分;不是全部。

您需要从

更改您的require语句

var Provider = require('react-redux');

到

var Provider = require('react-redux').Provider;

或使用ES6模块语法

import { Provider } from 'react-redux';

Answer 2

当你使用带有大括号的箭头函数时，它与你的函数返回对象不同。括号表示函数体（因此必须在其中使用return语句）。以下是它的假设：

connect(mapStateToProps, {
    test: () => {return { type: 'TEST_ACTION' }}
})(Index);

Redux + React-Router无法渲染

2 个答案: