ant-design/components/form/demo/ref-item.md
二货机器人 e46d414b11
feat: form instance support getFieldInstance (#24711)
* support getFieldInstance

* update doc

* fix lint

* move func

* move into hooks

* update ref logic

* fix lint

* rm only

* fix docs
2020-06-05 18:06:52 +08:00

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---
order: 999999
title:
zh-CN: 引用字段
en-US: Ref item
debug: true
---
## zh-CN
请优先使用 `ref`
## en-US
Use `ref` first!
```jsx
import React from 'react';
import { Button, Form, Input } from 'antd';
const Demo = () => {
const [form] = Form.useForm();
const ref = React.useRef();
return (
<Form form={form} initialValues={{ list: ['light'] }}>
<Form.Item name="test" label="test">
<Input ref={ref} />
</Form.Item>
<Form.List name="list">
{fields =>
fields.map(field => (
<Form.Item key={field.key} {...field}>
<Input ref={ref} />
</Form.Item>
))
}
</Form.List>
<Button
type="button"
onClick={() => {
form.getFieldInstance('test').focus();
}}
>
Focus Form.Item
</Button>
<Button
onClick={() => {
form.getFieldInstance(['list', 0]).focus();
}}
>
Focus Form.List
</Button>
</Form>
);
};
ReactDOM.render(<Demo />, mountNode);
```