ant-design/components/avatar/demo/dynamic.md
2020-01-21 16:21:37 +08:00

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---
order: 2
title:
zh-CN: 自动调整字符大小
en-US: Autoset Font Size
---
## zh-CN
对于字符型的头像,当字符串较长时,字体大小可以根据头像宽度自动调整。
## en-US
For letter type Avatar, when the letters are too long to display, the font size can be automatically adjusted according to the width of the Avatar.
```tsx
import React, { useState, FC } from 'react';
import { Avatar, Button } from 'antd';
const UserList = ['U', 'Lucy', 'Tom', 'Edward'];
const ColorList = ['#f56a00', '#7265e6', '#ffbf00', '#00a2ae'];
const Autoset: FC = () => {
const [user, setUser] = useState(UserList[0]);
const [color, setColor] = useState(ColorList[0]);
const changeUser = () => {
const index = UserList.indexOf(user);
setUser(index < UserList.length - 1 ? UserList[index + 1] : UserList[0]);
setColor(index < ColorList.length - 1 ? ColorList[index + 1] : ColorList[0]);
};
return (
<div>
<Avatar style={{ backgroundColor: color, verticalAlign: 'middle' }} size="large">
{user}
</Avatar>
<Button size="small" style={{ marginLeft: 16, verticalAlign: 'middle' }} onClick={changeUser}>
Change
</Button>
</div>
);
};
ReactDOM.render(<Autoset />, mountNode);
```