关于前端:不超过20行实现一个小程序端使用的vuex

const createStore = (options) => {let state = options.state || {};
  const mutations = options.mutations || {};
  const actions = options.actions || {};

  const commit = (type, payload) => {const mutation = mutations[type];
    mutation(state, payload);
  };

  const dispatch = (type, payload) => {const action = actions[type];
    action({commit, state}, payload);
  };

  const getState = () => {return state;};

  return {
    commit,
    dispatch,
    getState
  };
};

module.exports = createStore;

创立：

// index.js

const createStore = require('path/to/store.js');

const store = createStore({
  state: {count: 0},
  mutations: {increment(state, payload) {state.count += payload;}
  },
  actions: {asyncIncrement({ commit}, payload) {setTimeout(() => {commit('increment', payload);
      }, 1000);
    }
  }
});

module.exports = store;

在利用的其余中央，能够通过 store.dispatch 和 store.commit 办法来散发 action 和 mutation，例如：

// page.js

const store = require('path/to/index.js');

Page({onLoad: function () {store.dispatch('asyncIncrement', 1);
  },
  onUnload: function () {const state = store.getState();
    console.log(state.count);
  }
});

这个简略的状态治理库只实现了最根本的状态、mutation 和 action 的性能，能够依据本人的需要进行扩大和批改