getters

getters就是在state上进行的封装

getters

import { createStore } from 'vuex'
interface IAdmin {
    id: number
    adminName: string
}
export interface IState {
    admin: IAdmin
}
const state: IState = {
    admin: { adminName: "yuemaedu", id: 1 } as IAdmin
}
const getters = {
    getAdmin(state?: IState) {
        return state?.admin
    }
}
const store = createStore({
    state: state,
    getters: getters
})

export default store

定义getter

const getters = {
    getAdmin(state?: IState) {
        return state?.admin
    }
}

注册

const store = createStore({
    state: state,
    getters: getters
})

getter派生方法

const getters = {
    getAdmin(state?: IState) {
        return state?.admin
    },
    isAdmin: (state?: IState) => (id: number) => {
        return id === state?.admin.id
    }
}

使用派生的方法

        const isAdmin = store.getters.isAdmin(2)

示例运行的结果

{ "adminName": "yuemaedu", "id": 1 }{ "adminName": "yuemaedu", "id": 1 }false