mutations修改状态

首先说一下传值

const mutations = {
    add(state,num){
       state.count+=num
    },
    reduce(state,num){
       state.count-=num
    }
}

1 2	<button @click="$store.commit('add',2)">+</button> <button @click="$store.commit('reduce',3)">-</button>

然后跟上篇一样在调用的时候写法太烦，类似的我们用mapMutations

1 2	import {mapState,mapMutations} from'vuex' methods:mapMutations(['add','reduce']),

1 2	<button @click="add(1)">+</button> <button @click="reduce(1)">-</button>