問(wèn)題描述

import {mapState} from ’vuex’export default { data(){ return { oldData: 0 } } computed: mapState({ count: state => state.count, newData(){ return this.oldData + 1; } })}

這樣子寫嗎？

問(wèn)題解答

import {mapState} from ’vuex’export default { data() { return {//你這里少寫了oldData: 0 } } computed: { ...mapState(['count']), newData(){ return this.oldData + 1; } }}