Question

是否可以使用在同一模块中创建的state's property初始化getter？像这样：

export const gamesModule = {
state: {
    games: [],
    selectedGameID: null,
    playerOnTurnID: this.getters.getSelectedGame.playerData[0]
},
getters: {
    getGames: state => state.games,
    getselectedGameID: state => state.selectedGameID,
    getSelectedGame: state => getSelectedGameById(state.games, state.selectedGameID),
},
mutations: {
  SET_GAMES (state, game) {
    state.games.push(game);
  },
  SET_SELECTED_GAME_ID (state, id) {
    state.selectedGameID = id;
  },
  SET_PLAYER_ON_TURN_ID (state, playerID) {
    state.playerOnTurnID = playerID;
  }
},
actions: {
  async createGame({ commit }) {
    try {
      const { data } = await gameService.createGame();
      commit('SET_GAMES', data);
    } catch (error) {
      console.warn('Error creating new game: ', error);
    }
  },
  setSelectedGameID({ commit }, id) {
    commit('SET_SELECTED_GAME_ID', id);
  },
};

这样写，因为getters未定义，所以不起作用。

Answer 1

Option Explicit Sub INPUT_DATA() ' INPUT_DATA Macro With Application .ScreenUpdating = False .EnableEvents = False End With Dim sourceWorksheet As Worksheet Set sourceWorksheet = Worksheets("Input") Dim destinationWorksheet As Worksheet Set destinationWorksheet = Worksheets("Database") With sourceWorksheet If .Range("D55").Value = 0 Then .Range("B2:AI52").Copy With destinationWorksheet .Cells(.Rows.Count, "A").End(xlUp).Offset(1, 0).PasteSpecial Paste:=xlPasteValues End With End If End With With Application .ScreenUpdating = True .EnableEvents = True End With MsgBox ("File has been updated. DO NOT PRESS UPDATE again, as it will enter the same data once again") End Sub在对象的上下文中不存在，仅真正适用于构造函数或类。

我在这里看到两个问题。

首先，您不能引用对象本身，因为尚未定义它。在声明具有共同属性的对象（在本例中为getter函数）之前，您必须创建一个局部变量。

第二，更重要的是，我不确定它是否有助于访问getter（Reducer）函数，因为它不了解状态，底层Vuex库将该状态作为第一个参数传递给它处理突变（操作）时。

Vuex基于Redux模式，即Action-> Reducer-> Store，我建议您阅读一下有关Redux工作原理的快速介绍，因为它将帮助您更好地了解Vuex内部的动作流程。 >

在创建吸气剂的模块中使用吸气剂

1 个答案: