在redux中添加数组中的键和值

const addItem = (key, value) => {
  return {
    type: "ADD_ITEM",
    payload: { key, value }
  };
};

const initialState = {
  items: []
};

const reducer = (state = initialState, action) => {
  switch (action.type) {
    case "ADD_ITEM":
      return {
        ...state,
        items: [...state.items, action.payload]
      };
    default:
      return state;
  }
};

import { createStore } from "redux";

const store = createStore(reducer);

import { connect } from "react-redux";
import { addItem } from "./actions";

class MyComponent extends React.Component {
  // ...

  handleAddItem = () => {
    const { addItem } = this.props;
    addItem("key", "value");
  };

  // ...
}

const mapDispatchToProps = {
  addItem
};

export default connect(null, mapDispatchToProps)(MyComponent);