Redux + React-Router 不渲染

Question

所以我有非常标准的代码，但仍然不起作用。这里有什么问题？

我试过这个解决方案，因为我有同样的错误：，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__________ 也请看评论，真的很有用

Answer 1

当您使用带有括号的箭头函数时，它与您的函数 returns 对象不同。大括号表示函数体（因此您必须在其中使用 return 语句）。它应该是这样的：

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

Answer 2

Provider 是 react-redux 模块的一部分；不是全部。

您需要更改

中的要求语句

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';

Redux + React-Router 不渲染

Redux + React-Router doesn't render

javascript

reactjs

react-router

redux