Redux Toolkit - 将深色模式值保存到本地存储

Question

我目前正在学习 redux 工具包，我想将暗模式状态存储在

localStorage

中，这样如果用户刷新页面，所选模式保持不变。我的应用程序如下所示：

index.js

import ReactDOM from "react-dom";
import { Provider } from "react-redux";
import { configureStore } from "@reduxjs/toolkit";
import darkModeReducer from "./darkModeSlice";
import App from "./App";

const store = configureStore({
  reducer: {
    darkMode: darkModeReducer,
  },
});

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

darkModeSlice.js

import { createSlice } from "@reduxjs/toolkit";

const initialState = {
  darkMode: false,
};

export const darkModeSlice = createSlice({
  name: "darkMode",
  initialState,
  reducers: {
    toggleDarkMode: (state) => {
      state.darkMode = !state.darkMode;
    },
  },
});

export const { toggleDarkMode } = darkModeSlice.actions;

export default darkModeSlice.reducer;

这个问题的最佳解决方案是什么？请注意，我只想将暗模式状态存储在本地存储中，因此如果我将来添加其他减速器，它们的值将不会自动保存在那里。

Answer 1

您可以在 darkModeSlice 中更改初始状态

const initialState = {
    darkMode: localStorage.getItem("darkMode") || false
}

如果 localstorage 未定义，它将自动为 false。 当用户更改暗模式时，您可以将其存储为：

localStorage.setItem("darkMode", darkMode);

Answer 2

您可以使用 redux-persist 将您的状态保存在本地存储中

https://www.npmjs.com/package/redux-persist