From d27179de026107d1122f71cab3ef4d8f185c0b1b Mon Sep 17 00:00:00 2001
From: sight <1453017105@qq.com>
Date: Sat, 5 Mar 2022 16:09:15 +0800
Subject: [PATCH] =?UTF-8?q?chore(backtop):=20=E7=BB=84=E4=BB=B6=E5=8D=B8?=
 =?UTF-8?q?=E8=BD=BD=E6=97=B6=E7=A7=BB=E9=99=A4=E4=BA=8B=E4=BB=B6=E7=9B=91?=
 =?UTF-8?q?=E5=90=AC?=
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---
 src/component/backTop/index.vue | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/component/backTop/index.vue b/src/component/backTop/index.vue
index ef2c86a5..7b4efac5 100644
--- a/src/component/backTop/index.vue
+++ b/src/component/backTop/index.vue
@@ -5,7 +5,15 @@ export default {
 </script>
 
 <script lang="ts" setup>
-import { ref, shallowRef, withDefaults, computed, onMounted } from "vue";
+import {
+  ref,
+  shallowRef,
+  withDefaults,
+  computed,
+  onMounted,
+  onBeforeUnmount,
+} from "vue";
+import { useThrottle } from "@vueuse/core";
 import LayIcon from "../icon/index";
 import "./index.less";
 
@@ -186,6 +194,13 @@ onMounted(() => {
   scrollTarget.value = getScrollTarget();
   scrollTarget.value.addEventListener("scroll", throttle(handleScroll, 300));
 });
+
+onBeforeUnmount(() => {
+  scrollTarget.value?.removeEventListener(
+    "scroll",
+    throttle(handleScroll, 300)
+  );
+});
 </script>
 
 <template>