61 lines
2.0 KiB
Markdown
61 lines
2.0 KiB
Markdown
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---
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title: Sticky 吸顶
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description: 用于常驻页面顶部的信息、操作展示。
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spline: data
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isComponent: true
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---
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<span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20lines-87%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20functions-90%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20statements-84%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20branches-79%25-red" /></span>
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## 引入
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全局引入，在 miniprogram 根目录下的`app.json`中配置，局部引入，在需要引入的页面或组件的`index.json`中配置。
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```json
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"usingComponents": {
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"t-sticky": "tdesign-miniprogram/sticky/sticky"
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}
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```
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## 代码演示
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将内容包裹在 `Sticky` 组件内
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<img src="https://tdesign.gtimg.com/miniprogram/readme/sticky.gif" width="375px" height="50%">
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### 基础吸顶
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{{ base }}
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### 吸顶距离
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{{ offset }}
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### 指定容器
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{{ container }}
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## API
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### Sticky Props
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名称 | 类型 | 默认值 | 说明 | 必传
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-- | -- | -- | -- | --
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container | Function | - | 函数返回容器对应的 NodesRef 节点，将对应节点指定为组件的外部容器，滚动时组件会始终保持在容器范围内，当组件即将超出容器底部时，会返回原位置。 | N
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disabled | Boolean | false | 是否禁用组件 | N
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offset-top | String / Number | 0 | 吸顶时与顶部的距离，单位`px` | N
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z-index | Number | 99 | 吸顶时的 z-index | N
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### Sticky Events
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名称 | 参数 | 描述
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-- | -- | --
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scroll | `(detail: { scrollTop: number, isFixed: boolean })` | 滚动时触发，scrollTop: 距离顶部位置，isFixed: 是否吸顶
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### Sticky 外部样式类
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类名 | 说明
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-- | --
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t-class | 根节点样式类
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t-class-content | 内容样式类
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