From e4297bcbb662c2077c1b22b2bcebdc57837c24da Mon Sep 17 00:00:00 2001
From: Sun <1652829889@qq.com>
Date: Fri, 18 Dec 2020 16:55:50 +0800
Subject: [PATCH] docs(@vant/use): fix demo (#7763)

---
 packages/vant-use/src/useRect/README.md         | 2 +-
 packages/vant-use/src/useRelation/README.md     | 3 +++
 packages/vant-use/src/useScrollParent/README.md | 2 +-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/packages/vant-use/src/useRect/README.md b/packages/vant-use/src/useRect/README.md
index ba62af274..ff2a3236b 100644
--- a/packages/vant-use/src/useRect/README.md
+++ b/packages/vant-use/src/useRect/README.md
@@ -11,7 +11,7 @@
 ```
 
 ```js
-import { root } from 'vue';
+import { ref } from 'vue';
 import { useRect } from '@vant/use';
 
 export default {
diff --git a/packages/vant-use/src/useRelation/README.md b/packages/vant-use/src/useRelation/README.md
index dfc0f3aca..8a1ddaed5 100644
--- a/packages/vant-use/src/useRelation/README.md
+++ b/packages/vant-use/src/useRelation/README.md
@@ -8,6 +8,7 @@
 
 ```js
 // Parent.vue
+import { ref } from 'vue';
 import { useChildren } from '@vant/use';
 
 const RELATION_KEY = 'my-relation';
@@ -29,6 +30,8 @@ export default {
 // Child.vue
 import { useParent } from '@vant/use';
 
+const RELATION_KEY = 'my-relation';
+
 export default {
   setup() {
     const { parent } = useParent(RELATION_KEY);
diff --git a/packages/vant-use/src/useScrollParent/README.md b/packages/vant-use/src/useScrollParent/README.md
index 475258ea8..9d9994619 100644
--- a/packages/vant-use/src/useScrollParent/README.md
+++ b/packages/vant-use/src/useScrollParent/README.md
@@ -11,7 +11,7 @@
 ```
 
 ```js
-import { watch } from 'vue';
+import { ref, watch } from 'vue';
 import { useScrollParent, useEventListener } from '@vant/use';
 
 export default {