Redux/Reducer - 调度不改变状态

Question

正如标题所说，我发送了一个动作，但我的状态没有改变。这是一些代码：

App.js

import { createStore } from 'redux'
import reducer from './../reducer/reducer'
import { TEST } from './../reducer/actions'

// Initial store 
const initialStore = {
    name: "John",
    count: 0
};

const store = createStore(reducer, initialStore);
store.dispatch({ type: TEST })
console.log(store.name);

Reducer.js

import { GET_ITEMS, ADD_ITEM, TEST } from './actions'

function reducer (state, action)  {
    console.log(state, action);
    
    if(action.type === TEST){
        console.log("TEST");
        return {...state, name: "Mark"};
    }

    return state;
}

export default reducer;

package.json

"react-redux": "^7.2.2",
"redux": "^4.0.5",

console.log('TEST) 来自 reducer.js 打印 'TEST' 但 state name 保持不变。
console.log(store.name) 来自 app.js 打印 undefined

知道为什么这不起作用吗？

Answer 1

您应该使用 store.getState() 访问当前状态。 store.getState().name 应该是 return 这个名字。由于 store 没有 name 属性，undefined 是 returned.

store.dispatch({ type: TEST })
console.log(store.getState().name)

Redux/Reducer - 调度不改变状态

Redux/Reducer - dispatching doesnt change state

reactjs

redux

reducers