__WEBPACK_IMPORTED_MODULE_3_vuex__.a is not a constructor

 

錯誤代碼

 

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

 

正確代碼：

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

　

　

分析：構造器寫法寫錯了應該是new Vuex.Store({})

 

下面請忽略。。

 

　

let store = new Vuex({

state: {

totalPrice: 0

},

mutations: {

increment ( state, price) {

state. totalPrice += price

},

decrement ( state, price) {

state. totalPrice -= price

}

}

})