在React/Redux中逐个在屏幕上显示内容

constructor(props) {
  super(props);
  this.state = {
    content: []
  };
}

render() {
  return (
    <div>
      {this.state.content.map((item, index) => (
        <div key={index}>{item}</div>
      ))}
      <button onClick={this.showNextContent}>显示下一个</button>
    </div>
  );
}

showNextContent = () => {
  const { content } = this.state;
  const newContent = [...content, '新的内容'];
  this.setState({ content: newContent });
  this.props.dispatch({ type: 'UPDATE_CONTENT', payload: newContent });
}

const initialState = {
  content: []
};

const reducer = (state = initialState, action) => {
  switch (action.type) {
    case 'UPDATE_CONTENT':
      return { ...state, content: action.payload };
    default:
      return state;
  }
};

import { createStore } from 'redux';
import { Provider } from 'react-redux';

const store = createStore(reducer);

ReactDOM.render(
  <Provider store={store}>
    <App />
  </Provider>,
  document.getElementById('root')
);