From 50d908662e5dbec5c68605afd312d80e7ffb8b28 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=8C=E8=B4=A7=E6=9C=BA=E5=99=A8=E4=BA=BA?=
 <smith3816@gmail.com>
Date: Sat, 11 Apr 2020 10:30:05 +0800
Subject: [PATCH] docs: Update Form FAQ (#23138)

* docs: Update Form FAQ

* Update index.en-US.md
---
 components/form/index.en-US.md | 4 ++++
 components/form/index.zh-CN.md | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/components/form/index.en-US.md b/components/form/index.en-US.md
index 82b507a500..be6ccf348d 100644
--- a/components/form/index.en-US.md
+++ b/components/form/index.en-US.md
@@ -312,6 +312,10 @@ Before Modal open, children elements do not exist in the view. You can set `forc
 
 Components inside Form.Item with name property will turn into controlled mode, that makes `defaultValue` does not work anymore. Please try `initialValues` of Form to set default value.
 
+### Why resetFields will re-mount component?
+
+`resetFields` will re-mount component under Field to clean up customize component side effect(like asyn data, cached state, etc.). It's by design.
+
 <style>
   .site-form-item-icon {
     color: rgba(0, 0, 0, 0.25);
diff --git a/components/form/index.zh-CN.md b/components/form/index.zh-CN.md
index 15a3ccf851..2c12e97c81 100644
--- a/components/form/index.zh-CN.md
+++ b/components/form/index.zh-CN.md
@@ -313,6 +313,10 @@ validator(rule, value, callback) => {
 
 当你为 Form.Item 设置 `name` 属性后，子组件会转为受控模式。因而 `defaultValue` 不会生效。你需要在 Form 上通过 `initialValues` 设置默认值。
 
+### 为什么 resetFields 会重新 mount 组件？
+
+`resetFields` 会重置整个 Field，因而其子组件也会重新 mount 从而消除自定义组件可能存在的副作用（例如异步数据、状态等等）。
+
 <style>
   .site-form-item-icon {
     color: rgba(0, 0, 0, 0.25);