Vue——vue3中setup() 组件中引入生命周期函数写法

<script>
// 引入生命周期函数时，在之前基础上加上on
import { onBeforeMount, onMounted, onBeforeUpdate, onUpdated, onBeforeUnmount, onUnmounted } from 'vue'
export default {
  setup () {
    // beforeCreate、created 这两个不是引入方式
    onBeforeMount(() => {
      console.log( 'beforeMount:组件被挂载前调用');
    })
    onMounted(() => {
      console.log('mounted:组件被挂载之后调用');
    })
    onBeforeUpdate(() => {
      console.log('beforeUpdate:更新DOM树前调用');
    })
    onUpdated(() => {
      console.log('updated:更新DOM树后调用');
    })
    onBeforeUnmount(() => {
      console.log('beforeUnmount:实例被卸载前调用');
    })
    onUnmounted(() => {
      console.log('unmounted:实例被卸载后调用');
    })

  },
  beforeCreate () {
    console.log('组件中使用beforeCreate:数据初始化之前');
  },
  created () {
    console.log('组件中使用created:数字初始化之后');
  },

}
</script>