foreignObject
=============

SVG中的 **`<foreignObject>`** 元素允许包含来自不同的 XML 命名空间的元素。在浏览器的上下文中，很可能是 XHTML / HTML。

示例
--
```

html,
body,
svg {
  height: 100%;
}
```



```html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <style>
 polygon {
 fill: black;
 }

 div {
 color: white;
 font: 18px serif;
 height: 100%;
 overflow: auto;
 }
 </style>

  <polygon points="5,5 195,10 185,185 10,195" />

  <!-- Common use case: embed HTML text into SVG -->
  <foreignObject x="20" y="20" width="160" height="160">
    <!--
 In the context of SVG embeded into HTML, the XHTML namespace could
 be avoided, but it is mandatory in the context of an SVG document
 -->
    <div xmlns="http://www.w3.org/1999/xhtml">
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed mollis mollis
      mi ut ultricies. Nullam magna ipsum, porta vel dui convallis, rutrum
      imperdiet eros. Aliquam erat volutpat.
    </div>
  </foreignObject>
</svg>
```

属性
--

`height`

 设置 foreignObject 的高度。
 值得类型：**<length>**|**<percentage>** ; *默认值*: `auto`; *是否可设置动画*: **yes**

`width`

 设置 foreignObject 的宽度。
 值得类型：**<length>**|**<percentage>** ; *默认值*: `auto`; *是否可设置动画*: **yes**

`x`

 设置 foreignObject 的 x 坐标。
 值得类型：**<length>**|**<percentage>** ; *默认值*: `0`; *是否可设置动画*: **yes**

`y`

 设置 foreignObject 的 y 坐标。
 值得类型：**<length>**|**<percentage>** ; *默认值*: `0`; *是否可设置动画*: **yes**



**备注：** 从 SVG2 开始，x、y、宽度和高度都是几何属性，这意味着这些属性也可以用作该元素的 CSS 属性。

### Global attributes

Core Attributes (en-US)

Most notably: `id`, `tabindex (en-US)`

Styling Attributes
`class (en-US)`, `style`
Conditional Processing Attributes (en-US)

Most notably: `requiredExtensions`, `systemLanguage (en-US)`

Event Attributes

Global event attributes (en-US), Graphical event attributes (en-US), Document event attributes (en-US), Document element event attributes (en-US)

Presentation Attributes (en-US)

Most notably: `clip-path`, `clip-rule (en-US)`, `color`, `color-interpolation (en-US)`, `color-rendering`, `cursor (en-US)`, `display`, `fill`, `fill-opacity`, `fill-rule`, `filter`, `mask`, `opacity`, `pointer-events`, `shape-rendering`, `stroke`, `stroke-dasharray`, `stroke-dashoffset`, `stroke-linecap`, `stroke-linejoin`, `stroke-miterlimit`, `stroke-opacity`, `stroke-width`, `transform`, `vector-effect`, `visibility`

Aria Attributes

`aria-activedescendant`, `aria-atomic`, `aria-autocomplete`, `aria-busy`, `aria-checked`, `aria-colcount`, `aria-colindex`, `aria-colspan`, `aria-controls`, `aria-current`, `aria-describedby`, `aria-details`, `aria-disabled`, `aria-dropeffect`, `aria-errormessage`, `aria-expanded`, `aria-flowto`, `aria-grabbed`, `aria-haspopup`, `aria-hidden`, `aria-invalid`, `aria-keyshortcuts`, `aria-label`, `aria-labelledby`, `aria-level`, `aria-live`, `aria-modal`, `aria-multiline`, `aria-multiselectable`, `aria-orientation`, `aria-owns`, `aria-placeholder`, `aria-posinset`, `aria-pressed`, `aria-readonly`, `aria-relevant`, `aria-required`, `aria-roledescription`, `aria-rowcount`, `aria-rowindex`, `aria-rowspan`, `aria-selected`, `aria-setsize`, `aria-sort`, `aria-valuemax`, `aria-valuemin`, `aria-valuenow`, `aria-valuetext`, `role`

用法
--

|  |  |
| --- | --- |
| 类别 | 无 |
| 允许的内容 | 任意元素或字符数据 |

规范
--

| Specification |
| --- |
| Scalable Vector Graphics (SVG) 2 # ForeignObjectElement |

浏览器兼容性
------

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