From 733611e00b06c1b1a6b46d559f94d25b385b03df Mon Sep 17 00:00:00 2001
From: xingyu <xingyu4j@vip.qq.com>
Date: Thu, 27 Apr 2023 16:35:25 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=B0=B4=E5=8D=B0?=
 =?UTF-8?q?=E9=87=8D=E5=A4=8D=E5=8F=A0=E5=8A=A0=E9=97=AE=E9=A2=98?=
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---
 src/hooks/web/useWatermark.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/hooks/web/useWatermark.ts b/src/hooks/web/useWatermark.ts
index 4a24da0a..a8e0b854 100644
--- a/src/hooks/web/useWatermark.ts
+++ b/src/hooks/web/useWatermark.ts
@@ -4,8 +4,13 @@ import { addResizeListener, removeResizeListener } from '@/utils/event'
 import { isDef } from '@/utils/is'
 
 const domSymbol = Symbol('watermark-dom')
+const sourceMap = new WeakMap<HTMLElement, {}>()
 
 export function useWatermark(appendEl: Ref<HTMLElement | null> = ref(document.body) as Ref<HTMLElement>) {
+  const appendElRaw = unref(appendEl)
+  if (appendElRaw && sourceMap.has(appendElRaw)) {
+    return sourceMap.get(appendElRaw)
+  }
   const func = useRafThrottle(function () {
     const el = unref(appendEl)
     if (!el) return
@@ -80,6 +85,7 @@ export function useWatermark(appendEl: Ref<HTMLElement | null> = ref(document.bo
     const { clientHeight: height, clientWidth: width } = el
     updateWatermark({ str, width, height })
     el.appendChild(div)
+    sourceMap.set(el, { setWatermark, clear })
     return id
   }