父组件Father.vue

<template><Child :parentMethod="parentMethod" />
</template><script setup>
import { defineComponent } from 'vue';
import Child from './Child.vue';const parentMethod = () => {console.log('这是父页面的一个方法');
};
</script>

子组件Child.vue

<template><button @click="parentMethod">点击调用父组件中的方法</button>
</template><script setup>
import { defineProps } from 'vue';const props = defineProps({parentMethod: Function
});
</script>