## Skeleton 组件示例
### 基本
最简单的占位效果。

```tsx
import React from 'react';
import { Skeleton } from 'antd';
const App: React.FC = () => <Skeleton />;
export default App;
```
### 复杂的组合
更复杂的组合。

```tsx
import React from 'react';
import { Skeleton } from 'antd';
const App: React.FC = () => <Skeleton avatar paragraph={{ rows: 4 }} />;
export default App;
```
### 动画效果
显示动画效果。

```tsx
import React from 'react';
import { Skeleton } from 'antd';
const App: React.FC = () => <Skeleton active />;
export default App;
```
### 按钮/头像/输入框/图像/自定义节点
骨架按钮、头像、输入框、图像和自定义节点。

```tsx
import React, { useState } from 'react';
import { DotChartOutlined } from '@ant-design/icons';
import type { RadioChangeEvent } from 'antd';
import { Divider, Flex, Form, Radio, Skeleton, Space, Switch } from 'antd';
type SizeType = 'large' | 'medium' | 'small';
type ButtonShapeType = 'circle' | 'square' | 'round' | 'default';
type AvatarShapeType = 'circle' | 'square';
const App: React.FC = () => {
  const [active, setActive] = useState(false);
  const [block, setBlock] = useState(false);
  const [size, setSize] = useState<SizeType>('medium');
  const [buttonShape, setButtonShape] = useState<ButtonShapeType>('default');
  const [avatarShape, setAvatarShape] = useState<AvatarShapeType>('circle');
  const handleActiveChange = (checked: boolean) => {
    setActive(checked);
  };
  const handleBlockChange = (checked: boolean) => {
    setBlock(checked);
  };
  const handleSizeChange = (e: RadioChangeEvent) => {
    setSize(e.target.value);
  };
  const handleShapeButton = (e: RadioChangeEvent) => {
    setButtonShape(e.target.value);
  };
  const handleAvatarShape = (e: RadioChangeEvent) => {
    setAvatarShape(e.target.value);
  };
  return (
    <Flex gap="medium" vertical>
      <Space>
        <Skeleton.Button active={active} size={size} shape={buttonShape} block={block} />
        <Skeleton.Avatar active={active} size={size} shape={avatarShape} />
        <Skeleton.Input active={active} size={size} />
      </Space>
      <Skeleton.Button active={active} size={size} shape={buttonShape} block={block} />
      <Skeleton.Input active={active} size={size} block={block} />
      <Space>
        <Skeleton.Image active={active} />
        <Skeleton.Node active={active} style={{ width: 160 }} />
        <Skeleton.Node active={active}>
          <DotChartOutlined style={{ fontSize: 40, color: '#bfbfbf' }} />
        </Skeleton.Node>
      </Space>
      <Divider />
      <Form layout="inline" style={{ margin: '16px 0' }}>
        <Space size={16} wrap>
          <Form.Item label="Active">
            <Switch checked={active} onChange={handleActiveChange} />
          </Form.Item>
          <Form.Item label="Button and Input Block">
            <Switch checked={block} onChange={handleBlockChange} />
          </Form.Item>
          <Form.Item label="Size">
            <Radio.Group value={size} onChange={handleSizeChange}>
              <Radio.Button value="large">Large</Radio.Button>
              <Radio.Button value="medium">Medium</Radio.Button>
              <Radio.Button value="small">Small</Radio.Button>
            </Radio.Group>
          </Form.Item>
          <Form.Item label="Button Shape">
            <Radio.Group value={buttonShape} onChange={handleShapeButton}>
              <Radio.Button value="default">Default</Radio.Button>
              <Radio.Button value="square">Square</Radio.Button>
              <Radio.Button value="round">Round</Radio.Button>
              <Radio.Button value="circle">Circle</Radio.Button>
            </Radio.Group>
          </Form.Item>
          <Form.Item label="Avatar Shape">
            <Radio.Group value={avatarShape} onChange={handleAvatarShape}>
              <Radio.Button value="square">Square</Radio.Button>
              <Radio.Button value="circle">Circle</Radio.Button>
            </Radio.Group>
          </Form.Item>
        </Space>
      </Form>
    </Flex>
  );
};
export default App;
```
### 包含子组件
加载占位图包含子组件。

```tsx
import React, { useState } from 'react';
import { Button, Skeleton, Space } from 'antd';
const App: React.FC = () => {
  const [loading, setLoading] = useState<boolean>(false);
  const showSkeleton = () => {
    setLoading(true);
    setTimeout(() => {
      setLoading(false);
    }, 3000);
  };
  return (
    <Space vertical style={{ width: '100%' }} size={16}>
      <Skeleton loading={loading}>
        <h4 style={{ marginBottom: 16 }}>Ant Design, a design language</h4>
        <p>
          We supply a series of design principles, practical patterns and high quality design
          resources (Sketch and Axure), to help people create their product prototypes beautifully
          and efficiently.
        </p>
      </Skeleton>
      <Button onClick={showSkeleton} disabled={loading}>
        Show Skeleton
      </Button>
    </Space>
  );
};
export default App;
```
### 列表
在列表组件中使用加载占位符。

```tsx
import React, { useState } from 'react';
import type Icon from '@ant-design/icons';
import { LikeOutlined, MessageOutlined, StarOutlined } from '@ant-design/icons';
import { Avatar, List, Skeleton, Switch } from 'antd';
interface IconTextProps {
  icon: typeof Icon;
  text: React.ReactNode;
}
const listData = Array.from({ length: 3 }).map((_, i) => ({
  href: 'https://ant.design',
  title: `ant design part ${i + 1}`,
  avatar: `https://api.dicebear.com/7.x/miniavs/svg?seed=${i}`,
  description:
    'Ant Design, a design language for background applications, is refined by Ant UED Team.',
  content:
    'We supply a series of design principles, practical patterns and high quality design resources (Sketch and Axure), to help people create their product prototypes beautifully and efficiently.',
}));
const IconText: React.FC<IconTextProps> = ({ icon, text }) => (
  <>
    {React.createElement(icon, { style: { marginInlineEnd: 8 } })}
    {text}
  </>
);
const App: React.FC = () => {
  const [loading, setLoading] = useState(true);
  const onChange = (checked: boolean) => {
    setLoading(!checked);
  };
  return (
    <>
      <Switch checked={!loading} onChange={onChange} style={{ marginBottom: 16 }} />
      <List
        itemLayout="vertical"
        size="large"
        dataSource={listData}
        renderItem={(item) => (
          <List.Item
            key={item.title}
            actions={
              !loading
                ? [
                    <IconText icon={StarOutlined} text="156" key="list-vertical-star-o" />,
                    <IconText icon={LikeOutlined} text="156" key="list-vertical-like-o" />,
                    <IconText icon={MessageOutlined} text="2" key="list-vertical-message" />,
                  ]
                : undefined
            }
            extra={
              !loading && (
                <img
                  draggable={false}
                  width={272}
                  alt="logo"
                  src="https://gw.alipayobjects.com/zos/rmsportal/mqaQswcyDLcXyDKnZfES.png"
                />
              )
            }
          >
            <Skeleton loading={loading} active avatar>
              <List.Item.Meta
                avatar={<Avatar src={item.avatar} />}
                title={<a href={item.href}>{item.title}</a>}
                description={item.description}
              />
              {item.content}
            </Skeleton>
          </List.Item>
        )}
      />
    </>
  );
};
export default App;
```
### 自定义语义结构的样式和类
通过 `classNames` 和 `styles` 传入对象或者函数可以自定义 Skeleton 组件的[语义化结构](#semantic-dom)样式。

```tsx
import React from 'react';
import { Flex, Skeleton } from 'antd';
import type { SkeletonProps } from 'antd';
import { createStaticStyles } from 'antd-style';
const classnames = createStaticStyles(({ css }) => ({
  root: css`
    border-radius: 10px;
    padding: 12px;
  `,
  header: css`
    margin-bottom: 12px;
  `,
}));
const paragraphStyles = createStaticStyles(({ css }) => ({
  paragraph: css`
    & > li {
      background-color: rgba(229, 243, 254, 0.5);
    }
  `,
}));
const styles: SkeletonProps['styles'] = {
  avatar: {
    border: '1px solid #aaa',
  },
  title: {
    border: '1px solid #aaa',
  },
};
const stylesFn: SkeletonProps['styles'] = (info) => {
  if (info.props.active) {
    return {
      root: {
        border: '1px solid rgba(229, 243, 254, 0.3)',
      },
      title: {
        backgroundColor: 'rgba(229, 243, 254, 0.5)',
        height: 20,
        borderRadius: 20,
      },
    } satisfies SkeletonProps['styles'];
  }
  return {};
};
const App: React.FC = () => {
  return (
    <Flex gap="medium">
      <Skeleton classNames={classnames} styles={styles} avatar paragraph={false} />
      <Skeleton
        classNames={{ ...classnames, paragraph: paragraphStyles.paragraph }}
        styles={stylesFn}
        active
      />
    </Flex>
  );
};
export default App;
```
### 自定义组件 Token
自定义组件 Token。

```tsx
import React from 'react';
import { ConfigProvider, Skeleton } from 'antd';
const App: React.FC = () => (
  <ConfigProvider
    theme={{
      components: {
        Skeleton: {
          blockRadius: 30,
          titleHeight: 50,
          gradientFromColor: '#222',
          gradientToColor: '#444',
          paragraphMarginTop: 30,
          paragraphLiHeight: 30,
        },
      },
    }}
  >
    <Skeleton loading active />
  </ConfigProvider>
);
export default App;
```