80 lines
2.2 KiB
Markdown
80 lines
2.2 KiB
Markdown
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---
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title: 轮播组件 carousel
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toc: true
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---
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# 轮播组件
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> 轮播组件 `carousel` 主要适用于跑马灯/轮播等交互场景。它并非单纯地为焦点图而生，准确地说，它可以满足任何内容的轮播式切换操作，亦可胜任 `fullpage`（全屏上下轮播）的需求。
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<h2 id="examples" lay-toc="{anchor: null}" style="margin-bottom: 0;">示例</h2>
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<style>
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/* 为了区分效果 */
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div[carousel-item]>*{text-align: center; line-height: 280px; color: #fff;}
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div[carousel-item]>*:nth-child(2n){background-color: #16b777;}
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div[carousel-item]>*:nth-child(2n+1){background-color: #16baaa;}
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</style>
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<div>
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{{- d.include("docs/carousel/detail/demo.md") }}
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</div>
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<h2 id="api" lay-toc="{}">API</h2>
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| API | 描述 |
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| --- | --- |
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| var carousel = layui.carousel | 获得 `carousel` 模块。 |
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| [var inst = carousel.render(options)](#render) | carousel 组件渲染，核心方法。 |
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| [inst.reload(options)](#reload) | 轮播实例重载 |
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| [inst.goto(index)](#goto) <sup>2.8+</sup> | 轮播切换到特定下标 |
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<h2 id="render" lay-toc="{level: 2}">渲染</h2>
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`carousel.render(options);`
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- 参数 `options` : 基础属性配置项。[#详见属性](#options)
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该方法返回一个实例对象，包含操作当前实例的相关方法成员。
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```
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var inst = carousel.render(options);
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console.log(inst); // 得到当前实例对象
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```
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<h3 id="reload" lay-toc="{level: 2}">重载</h3>
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`inst.reload(options);`
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- 参数 `options` : 基础属性配置项。[#详见属性](#options)
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通过渲染返回的实例对象，可获得重载方法，用于实现对实例的属性重载。
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```
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var inst = carousel.render(options); // 轮播初始渲染
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inst.reload(options); // 轮播重载
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```
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详细用法可参考：[#示例](#demo)
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<h2 id="options" lay-toc="{level: 2, hot: true}">属性</h2>
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<div>
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{{- d.include("docs/carousel/detail/options.md") }}
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</div>
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<h3 id="goto" lay-toc="{level: 2}">切换</h3>
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`inst.goto(index);`
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- 参数 `index` : 轮播下标，从 `0` 开始计算
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通过渲染返回的实例对象，可获得切换方法，用于实现对轮播的手动定向切换。
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```
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var inst = carousel.render(options); // 轮播初始渲染
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inst.goto(0); // 轮播切换到第一项
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inst.goto(1); // 轮播切换到第二项
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```
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