antd3和antd4区别

const Demo = ({ form }) => {
const { getFieldDecorator, validateFields } = form;
const handleSubmit = e => {
e.preventDefault();
validateFields((err, values) => {
if (!err) {
console.log(values);
}
});
};
return (

<Form.Item>
{getFieldDecorator("username", {
initialValue: '',
rules: [{ required: true, message: "Please input your username!" }]
})()}
</Form.Item>
<Form.Item>

Submit

</Form.Item>

);
};
export default Form.create()(Demo);

const Demo = () => {
const onFinish = values => {
console.log(values);
};

return (
<Form
name="basic"
layout="inline"
initialValues={{ username: '' }}
onFinish={onFinish}
>
<Form.Item
label="姓名"
name="username"
rules={[{ required: true, message: "Please input your username!" }]}
>

</Form.Item>

  <Form.Item>
    <Button type="primary" htmlType="submit">
      Submit
    </Button>
  </Form.Item>
</Form>

);
};

export default Demo;

onFinish和From.crete()的getFieldDecorator区别