120 lines
4.4 KiB
Markdown
120 lines
4.4 KiB
Markdown
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---
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title: Slider 滑动选择器
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description: 用于选择横轴上的数值、区间、档位。
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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-95%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20functions-100%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20statements-94%25-blue" /></span><span class="coverages-badge" style="margin-right: 10px"><img src="https://img.shields.io/badge/coverages%3A%20branches-82%25-blue" /></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-slider": "tdesign-miniprogram/slider/slider"
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}
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```
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## 代码演示
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<img src="https://tdesign.gtimg.com/miniprogram/readme/slider.png" width="375px" height="50%">
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### 组件类型
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单游标滑块
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{{ base }}
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双游标滑块
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{{ range }}
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带数值滑动选择器
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{{ label }}
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带刻度滑动选择器
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{{ step }}
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### 组件状态
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滑块禁用状态
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{{ disabled }}
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#### 特殊样式
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胶囊型滑块
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{{ capsule }}
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## API
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### Slider Props
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名称 | 类型 | 默认值 | 说明 | 必传
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-- | -- | -- | -- | --
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colors | Array | [] | 废弃。颜色，[已选择, 未选择]。TS 类型：`Array<string>` | N
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disabled | Boolean | false | 是否禁用组件 | N
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disabled-color | Array | [] | 废弃。禁用状态滑动条的颜色，[已选, 未选]。TS 类型：`Array<string>` | N
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label | String / Boolean | false | 滑块当前值文本。<br />值为 true 显示默认文案；值为 false 不显示滑块当前值文本；<br />值为 `${value}%` 则表示组件会根据占位符渲染文案；<br />值类型为函数时，参数 `value` 标识滑块值，参数 `position=start` 表示范围滑块的起始值，参数 `position=end` 表示范围滑块的终点值。TS 类型：`string \| boolean` | N
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marks | Object / Array | {} | 刻度标记，示例：`[0, 10, 40, 200]` 或者 `{ 5: '5¥', 10: '10%' }`。TS 类型：`Record<number, string> \| Array<number>` | N
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max | Number | 100 | 滑块范围最大值 | N
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min | Number | 0 | 滑块范围最小值 | N
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range | Boolean | false | 双游标滑块 | N
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show-extreme-value | Boolean | false | 是否边界值 | N
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step | Number | 1 | 步长 | N
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theme | String | default | `0.30.0`。滑块风格。可选项：default/capsule | N
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value | Number / Array | 0 | 滑块值。TS 类型：`SliderValue` `type SliderValue = number \| Array<number>`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/slider/type.ts) | N
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default-value | Number / Array | undefined | 滑块值。非受控属性。TS 类型：`SliderValue` `type SliderValue = number \| Array<number>`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/slider/type.ts) | N
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### Slider Events
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名称 | 参数 | 描述
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-- | -- | --
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change | `(value: SliderValue)` | 滑块值变化时触发
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dragend | \- | 结束拖动时触发
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dragstart | \- | 开始拖动时触发
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### Slider 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-bar | 滑道底部样式类
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t-class-bar-active | 滑道激活态样式类
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t-class-bar-disabled | 滑道禁用态样式类
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t-class-cursor | 游标样式类
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## FAQ
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当 slider 外层使用 `hidden` 包裹，需要在 `hidden = false` 时，重新调用组件的 `init` 方法，才能正常渲染。如下：
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```html
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<t-slider id="slider" />
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```
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```js
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const $slider = this.selectComponent('#slider');
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$slider.init();
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```
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### CSS 变量
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组件提供了下列 CSS 变量，可用于自定义样式。
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名称 | 默认值 | 描述
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-- | -- | --
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--td-slider-active-color | @brand-color | -
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--td-slider-bar-height | 8rpx | -
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--td-slider-capsule-bar-color | @bg-color-component | -
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--td-slider-capsule-bar-heihgt | 48rpx | -
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--td-slider-capsule-line-heihgt | 36rpx | -
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--td-slider-default-color | @bg-color-component-disabled | -
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--td-slider-default-color | @bg-color-secondarycomponent | -
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--td-slider-disabled-color | @brand-color-disabled | -
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--td-slider-disabled-text-color | @font-gray-4 | -
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--td-slider-dot-bg-color | @bg-color-container | -
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--td-slider-dot-color | @bg-color-secondarycontainer | -
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--td-slider-dot-size | 40rpx | -
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