vant/src/notice-bar/README.md

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# NoticeBar
### Intro
Used to display a group of message notifications in a continuons loop.
### Install
Register component globally via `app.use`, refer to [Component Registration](#/en-US/advanced-usage#zu-jian-zhu-ce) for more registration ways.
```js
import { createApp } from 'vue';
import { NoticeBar } from 'vant';
const app = createApp();
app.use(NoticeBar);
```
## Usage
### Basic Usage
```html
<van-notice-bar text="Notice Content" left-icon="volume-o" />
```
### Scrollable
```html
<!-- Enable scroll when text is short -->
<van-notice-bar scrollable text="Notice Content" />
<!-- Disable scroll when text is long -->
<van-notice-bar
:scrollable="false"
text="Technology is the common soul of the people who developed it."
/>
```
### Wrapable
```html
<van-notice-bar wrapable :scrollable="false">Notice Content</van-notice-bar>
```
### Mode
```html
<van-notice-bar mode="closeable">Notice Content</van-notice-bar>
<van-notice-bar mode="link">Notice Content</van-notice-bar>
```
### Custom Style
```html
<van-notice-bar color="#1989fa" background="#ecf9ff" left-icon="info-o">
Notice Content
</van-notice-bar>
```
### Vertical Scroll
```html
<van-notice-bar left-icon="volume-o" :scrollable="false">
<van-swipe
vertical
class="notice-swipe"
:autoplay="3000"
:show-indicators="false"
>
<van-swipe-item>Content 1</van-swipe-item>
<van-swipe-item>Content 2</van-swipe-item>
<van-swipe-item>Content 3</van-swipe-item>
</van-swipe>
</van-notice-bar>
<style>
.notice-swipe {
height: 40px;
line-height: 40px;
}
</style>
```
## API
### Props
| Attribute | Description | Type | Default |
| --- | --- | --- | --- |
| mode | Mode, can be set to `closeable` `link` | _string_ | `''` |
| text | Notice text content | _string_ | `''` | - |
| color | Text color | _string_ | `#f60` |
| background | Background color | _string_ | `#fff7cc` |
| left-icon | Left Icon | _string_ | - |
| delay | Animation delay (s) | _number \| string_ | `1` |
| speed | Scroll speed (px/s) | _number \| string_ | `60` |
| scrollable | Whether to scroll content | _boolean_ | - |
| wrapable | Whether to enable text wrap | _boolean_ | `false` | - |
### Events
| Event | Description | Arguments |
| ------ | ---------------------------------- | ------------------- |
| click | Emitted when NoticeBar is clicked | _event: MouseEvent_ |
| close | Emitted when NoticeBar is closed | _event: MouseEvent_ |
| replay | Emitted when NoticeBar is replayed | - |
### Slots
| Name | Description |
| ---------- | ------------------- |
| default | Notice text content |
| left-icon | Custom left icon |
| right-icon | Custom right icon |
### Less Variables
How to use: [Custom Theme](#/en-US/theme).
| Name | Default Value | Description |
| ---------------------------- | ------------------------- | ----------- |
| @notice-bar-height | `40px` | - |
| @notice-bar-padding | `0 @padding-md` | - |
| @notice-bar-wrapable-padding | `@padding-xs @padding-md` | - |
| @notice-bar-text-color | `@orange-dark` | - |
| @notice-bar-font-size | `@font-size-md` | - |
| @notice-bar-line-height | `24px` | - |
| @notice-bar-background-color | `@orange-light` | - |
| @notice-bar-icon-size | `16px` | - |
| @notice-bar-icon-min-width | `24px` | - |