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---
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category: Components
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subtitle: 图片
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group: 数据展示
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title: Image
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cols: 2
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cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*FbOCS6aFMeUAAAAAAAAAAAAADrJ8AQ/original
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---
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可预览的图片。
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## 何时使用
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- 需要展示图片时使用。
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- 加载显示大图或加载失败时容错处理。
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## 代码演示
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<!-- prettier-ignore -->
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<code src="./demo/basic.tsx">基本用法</code>
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<code src="./demo/fallback.tsx">容错处理</code>
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<code src="./demo/placeholder.tsx">渐进加载</code>
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<code src="./demo/preview-group.tsx">多张图片预览</code>
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<code src="./demo/preview-group-visible.tsx">相册模式</code>
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<code src="./demo/previewSrc.tsx">自定义预览图片</code>
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<code src="./demo/controlled-preview.tsx">受控的预览</code>
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<code src="./demo/preview-mask.tsx" debug>自定义预览文本</code>
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<code src="./demo/preview-group-top-progress.tsx" debug>多图预览时顶部进度自定义</code>
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## API
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| 参数 | 说明 | 类型 | 默认值 | 版本 |
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| --- | --- | --- | --- | --- |
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| alt | 图像描述 | string | - | 4.6.0 |
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| fallback | 加载失败容错地址 | string | - | 4.6.0 |
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| height | 图像高度 | string \| number | - | 4.6.0 |
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| placeholder | 加载占位, 为 `true` 时使用默认占位 | ReactNode | - | 4.6.0 |
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| preview | 预览参数，为 `false` 时禁用 | boolean \| [previewType](#previewtype) | true | 4.6.0 [previewType](#previewtype):4.7.0 |
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| src | 图片地址 | string | - | 4.6.0 |
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| width | 图像宽度 | string \| number | - | 4.6.0 |
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| onError | 加载错误回调 | (event: Event) => void | - | 4.12.0 |
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| rootClassName | 为展示图片根 DOM 和预览大图根 DOM 提供自定义 className | string | - | 4.20.0 |
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### previewType
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```js
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{
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visible?: boolean;
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onVisibleChange?: (visible, prevVisible) => void;
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getContainer?: string | HTMLElement | (() => HTMLElement); // v4.8.0
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src?: string; // v4.10.0
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mask?: ReactNode; // v4.9.0
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maskClassName?: string; // v4.11.0
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current?: number; // v4.12.0 仅支持 PreviewGroup
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countRender?: (current: number, total: number) => string // v4.20.0 仅支持 PreviewGroup
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scaleStep?: number;
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forceRender?: boolean;
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}
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```
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其他属性见 [<img>](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img#Attributes)
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