使用生命周期钩子onBeforeMount setup(){ const postData = ref([]) onBeforeMount(async () => { const res = await axios.get('http://localhost:3002/postdata') postData.value = res.data }) return { ... postData }
// vue2.xexport default { data () { return {} }, methods: { ... }, beforeCreate() {}, created() {}, beforeMount() {}, mounted() {}, beforeUpdate() {}, updated() {}, beforeDestroy() {}, destroyed() {} } // vue3.x import
链接：http://ggz.longpanda.top/article_detail?id=26 import { onBeforeMount, onMounted, onBeforeUpdate, onUpdated, onBeforeUnmount, onUnmounted, onActivated, onDeactivated, onErrorCaptured } from 'vue' export default { setup() {
//compostion api (组合api) import { ref, reactive,onBeforeMount, onMounted,onBeforeUpdate, onUpdated, onBeforeUnmount, onUnmounted,computed } from 'vue' export default{ setup(){ // 非响应式变量 let msg = "hello wrold";
