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* docs: add general components TS demo * docs: add layout components TS demo * docs: add navigation components TS demo * docs: add data entry components TS demo * chore(deps): add types for qs * docs: add data display TS demo * docs: add feedback components TS demo * docs: add other components TS demo * chore(deps): add types * docs: unified demo code style * docs: fix lint error * docs: add demo TS type * docs: fix demo TS type * test: update snapshot * docs: fix TS demo * feat: update Rate character type * docs: fix lint error * feat: update Rate character type * feat: update Rate character type
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3.2 KiB
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zh-CN
用户可以上传图片并在列表中显示缩略图。当上传照片数到达限制后，上传按钮消失。
en-US
After users upload picture, the thumbnail will be shown in list. The upload button will disappear when count meets limitation.
import React, { useState } from 'react';
import { Upload, Modal } from 'antd';
import { PlusOutlined } from '@ant-design/icons';
import type { UploadFile } from 'antd/es/upload/interface';
import type { RcFile, UploadProps } from 'antd/es/upload';
const getBase64 = (file: RcFile): Promise<string> =>
new Promise((resolve, reject) => {
const reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = () => resolve(reader.result as string);
reader.onerror = error => reject(error);
});
const App: React.FC = () => {
const [previewVisible, setPreviewVisible] = useState(false);
const [previewImage, setPreviewImage] = useState('');
const [previewTitle, setPreviewTitle] = useState('');
const [fileList, setFileList] = useState<UploadFile[]>([
{
uid: '-1',
name: 'image.png',
status: 'done',
url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
},
{
uid: '-2',
name: 'image.png',
status: 'done',
url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
},
{
uid: '-3',
name: 'image.png',
status: 'done',
url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
},
{
uid: '-4',
name: 'image.png',
status: 'done',
url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
},
{
uid: '-xxx',
percent: 50,
name: 'image.png',
status: 'uploading',
url: 'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png',
},
{
uid: '-5',
name: 'image.png',
status: 'error',
},
]);
const handleCancel = () => setPreviewVisible(false);
const handlePreview = async (file: UploadFile) => {
if (!file.url && !file.preview) {
file.preview = await getBase64(file.originFileObj as RcFile);
}
setPreviewImage(file.url || (file.preview as string));
setPreviewVisible(true);
setPreviewTitle(file.name || file.url!.substring(file.url!.lastIndexOf('/') + 1));
};
const handleChange: UploadProps['onChange'] = ({ fileList: newFileList }) =>
setFileList(newFileList);
const uploadButton = (
<div>
<PlusOutlined />
<div style={{ marginTop: 8 }}>Upload</div>
</div>
);
return (
<>
<Upload
action="https://www.mocky.io/v2/5cc8019d300000980a055e76"
listType="picture-card"
fileList={fileList}
onPreview={handlePreview}
onChange={handleChange}
>
{fileList.length >= 8 ? null : uploadButton}
</Upload>
<Modal visible={previewVisible} title={previewTitle} footer={null} onCancel={handleCancel}>
<img alt="example" style={{ width: '100%' }} src={previewImage} />
</Modal>
</>
);
};
export default App;