与 2.x 版本生命周期相对应的组合式 API
beforeCreate -> 使用 setup()
created -> 使用 setup()
beforeMount -> onBeforeMount
mounted -> onMounted
beforeUpdate -> onBeforeUpdate
updated -> onUpdated
beforeDestroy -> onBeforeUnmount
destroyed -> onUnmounted
errorCaptured -> onErrorCaptured
使用
javascript
import {onBeforeMount,onMounted } from 'vue'
//在组件被挂载之前调用
onBeforeMount(()=>{
console.log('组件被挂载之前')
})
//在组件被挂载之后调用
onMounted(() => {
console.log('在组件被挂载之后')
});