store.js
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
const store = new Vuex.Store({
state: {
count: 0
},
mutations: {
increment (state) {
state.count++
},
decrement (state) {
state.count--
}
},
actions: {
increment (context) {
context.commit('increment')
},
decrement (context) {
context.commit('decrement')
}
},
getters: {
odd:state => state.count
}
})
export default store
组件：