New Huajishe Check ChaoXing
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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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<a href="https://developers.weixin.qq.com/s/mJ7HTiml7NSM" title="在开发者工具中预览效果" target="_blank" rel="noopener noreferrer"> 在开发者工具中预览效果 </a>
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<blockquote style="background-color: #d9e1ff; font-size: 15px; line-height: 26px;margin: 16px 0 0;padding: 16px; border-radius: 6px; color: #0052d9" >
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<p>Tips: 请确保开发者工具为打开状态。导入开发者工具后,依次执行:npm i > 构建npm包 > 勾选 "将JS编译成ES5"</p>
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</blockquote>
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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 | 描述 | 必传
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-- | -- | -- | -- | --
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style | Object | - | 样式 | N
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custom-style | Object | - | 样式,一般用于开启虚拟化组件节点场景 | N
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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。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts)
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### Sticky External Classes
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类名 | 描述
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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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