vuex & redux

import { mapActions } from 'vuex'

export default {
  // ...
  methods: {
    ...mapActions([
      'increment', // 將 `this.increment()` 映射爲 `this.$store.dispatch('increment')`

      // `mapActions` 也支持載荷：
      'incrementBy' // 將 `this.incrementBy(amount)` 映射爲 `this.$store.dispatch('incrementBy', amount)`
    ]),
    ...mapActions({
      add: 'increment' // 將 `this.add()` 映射爲 `this.$store.dispatch('increment')`
    })
  }
}

namespace & path

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

const moduleA = {
    namespaced: true,
    state: { 
        count: 3
    },
    mutations: {
        increment (state) {
            state.count++
        }
    },
    getters: {
      doubleCount (state) {
          return state.count * 2
      }  
    },
    actions: {
        incrementIfOdd({state, commit}) {
            if (state.count % 2 === 1) {
                commit('increment');
            }
        }
    }
}

const moduleB = {
    state: {
        count: 8
    },
    mutations: {
        
    },
    getters: {
        
    },
    actions: {
        
    }
}

const store = new Vuex.Store({
    modules: {
        a: moduleA,
        b: moduleB
    },
    state: {
        count: 2
    },
    mutations: {
        
    },
    getters: {
        
    },
    actions: {
        
    }
})


new Vue({ 
    el: '#app',
    store,
    data: {
    },
    computed: {
    }
});

console.log(store.state.a.count);
// console.log(store.state.b.count);
store.commit('a/increment');
console.log(store.state.a.count);

bugs & warns

https://vuejs.org/v2/guide/deployment.html

index.pack.js:736 [Vue warn]: You are using the runtime-only build of Vue where the template compiler is not available. Either pre-compile the templates into render functions, or use the compiler-included build.