__WEBPACK_IMPORTED_MODULE_3_vuex__.a is not a constructor

错误代码

let store = new Vuex({
  state: {
    totalPrice: 0
  },
  mutations: {
    increment (state, price) {
      state.totalPrice += price
    },
    decrement (state, price) {
      state.totalPrice -= price
    }
  }
})

正确代码：

let store = new Vuex.Store({
  state: {
    totalPrice: 0
  },
  mutations: {
    increment (state, price) {
      state.totalPrice += price
    },
    decrement (state, price) {
      state.totalPrice -= price
    }
  }
})

　

　

分析：构造器写法写错了应该是new Vuex.Store({})

下面请忽略。。

　

let store = new Vuex({

state: {

totalPrice: 0

},

mutations: {

increment ( state, price) {

state. totalPrice += price

},

decrement ( state, price) {

state. totalPrice -= price

}

}

})