admin-vben5/docs/src/guide/in-depth/features.md

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# 常用功能
一些常用的功能合集。
## 登录认证过期
当接口返回`401`状态码时,框架会认为登录认证过期,登录超时会跳转到登录页或者打开登录弹窗。在应用目录下的`preferences.ts`可以配置:
### 跳转登录页面
登录超时会跳转到登录页
```ts
import { defineOverridesPreferences } from '@vben/preferences';
export const overridesPreferences = defineOverridesPreferences({
// overrides
app: {
loginExpiredMode: 'page',
},
});
```
### 打开登录弹窗
登录超时会打开登录弹窗
![](/guide/login-expired.png)
配置:
```ts
import { defineOverridesPreferences } from '@vben/preferences';
export const overridesPreferences = defineOverridesPreferences({
// overrides
app: {
loginExpiredMode: 'model',
},
});
```
## 动态标题
- 默认值:`true`
开启后网页标题随着路由的`title`而变化。在应用目录下的`preferences.ts`,开启或者关闭即可。
```ts
export const overridesPreferences = defineOverridesPreferences({
// overrides
app: {
dynamicTitle: true,
},
});
```
## 页面水印
- 默认值:`false`
开启后网页会显示水印,在应用目录下的`preferences.ts`,开启或者关闭即可。
```ts
export const overridesPreferences = defineOverridesPreferences({
// overrides
app: {
watermark: true,
},
});
```
如果你想更新水印的内容,可以这么做,参数可以参考 [watermark-js-plus](https://zhensherlock.github.io/watermark-js-plus/)
```ts
import { useWatermark } from '@vben/hooks';
const { destroyWatermark, updateWatermark } = useWatermark();
await updateWatermark({
// 水印内容
content: 'hello my watermark',
});
```