更换事件

src/components/Timer.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { ref, watch, onMounted, onUnmounted } from "vue";
+import { ref, watch, onMounted, onBeforeUnmount } from "vue";
 const props = defineProps({
   countdown: {
     type: Number,
@@ -26,7 +26,7 @@ onMounted(() => {
   }, 300);
   uni.$on("update-timer", updateTimer);
 });
-onUnmounted(() => {
+onBeforeUnmount(() => {
   if (timer.value) clearInterval(timer.value);
   uni.$off("update-timer", updateTimer);
 });