From 832dab10cf319388cc7a946e7eb0500cd8e43244 Mon Sep 17 00:00:00 2001
From: chenjiahan <chenjiahan@youzan.com>
Date: Fri, 21 Aug 2020 00:13:27 +0800
Subject: [PATCH] breaking change(Area): adjust change event param

---
 docs/markdown/migrate-from-v2.zh-CN.md |  4 ++++
 src/area/README.md                     |  2 +-
 src/area/README.zh-CN.md               | 10 +++++-----
 src/area/index.js                      |  5 +++--
 4 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/docs/markdown/migrate-from-v2.zh-CN.md b/docs/markdown/migrate-from-v2.zh-CN.md
index 1c483df41..fd5d6de75 100644
--- a/docs/markdown/migrate-from-v2.zh-CN.md
+++ b/docs/markdown/migrate-from-v2.zh-CN.md
@@ -138,3 +138,7 @@ export default {
 
 - 移除 change 事件的第一个参数（picker 实例）
 - 级联选择下，confirm/change 事件返回的回调参数将包含为完整的选项对象。
+
+### Area
+
+- 移除 change 事件的第一个参数（picker 实例）
diff --git a/src/area/README.md b/src/area/README.md
index 7a5749251..ddc4672fa 100644
--- a/src/area/README.md
+++ b/src/area/README.md
@@ -77,7 +77,7 @@ To have a selected value，simply pass the `code` of target area to `value` prop
 | --- | --- | --- |
 | confirm | triggers when clicking the confirm button | an array |
 | cancel | triggers when clicking the cancel button | - |
-| change | Triggered when current option changed | Picker instance, current values，column index |
+| change | Triggered when current option changed | current values，column index |
 
 ### Slots
 
diff --git a/src/area/README.zh-CN.md b/src/area/README.zh-CN.md
index 0af6d36c9..3b366e991 100644
--- a/src/area/README.zh-CN.md
+++ b/src/area/README.zh-CN.md
@@ -73,11 +73,11 @@ app.use(Area);
 
 ### Events
 
-| 事件    | 说明               | 回调参数                                    |
-| ------- | ------------------ | ------------------------------------------- |
-| confirm | 点击右上方完成按钮 | 一个数组参数，具体格式看下方数据格式章节    |
-| cancel  | 点击取消按钮时     | -                                           |
-| change  | 选项改变时触发     | Picker 实例，所有列选中值，当前列对应的索引 |
+| 事件    | 说明               | 回调参数                                 |
+| ------- | ------------------ | ---------------------------------------- |
+| confirm | 点击右上方完成按钮 | 一个数组参数，具体格式看下方数据格式章节 |
+| cancel  | 点击取消按钮时     | -                                        |
+| change  | 选项改变时触发     | 所有列选中值，当前列对应的索引           |
 
 ### Slots
 
diff --git a/src/area/index.js b/src/area/index.js
index 214aec1d6..79cb7c926 100644
--- a/src/area/index.js
+++ b/src/area/index.js
@@ -177,12 +177,13 @@ export default createComponent({
       });
     },
 
-    onChange(picker, values, index) {
+    onChange(values, index) {
+      const { picker } = this.$refs;
       this.code = values[index].code;
       this.setValues();
 
       const parsedValues = this.parseOutputValues(picker.getValues());
-      this.$emit('change', picker, parsedValues, index);
+      this.$emit('change', parsedValues, index);
     },
 
     onConfirm(values, index) {