<script lang="ts" setup> import {ref,reactive, inject} from "vue" let {newSum,buyBook} = inject("aa") console.log(inject("aa")) </script> <template> <div> 孙级 <p>爷爷给了我{{ newSum }}本书</p> <button @click="buyBook(2)">给爷爷买书</button> </div> </template> <style lang="scss" scoped> </style>
