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DocumentOrShadowRoot

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这是一个实验中的功能
此功能某些浏览器尚在开发中,请参考浏览器兼容性表格以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。

The DocumentOrShadowRoot interface of the Shadow DOM API provides APIs that are shared between documents and shadow roots.

Properties

DocumentOrShadowRoot.activeElement 只读
Returns the element within the shadow tree that has focus.
DocumentOrShadowRoot.styleSheets 只读
Returns a StyleSheetList of CSSStyleSheet objects for stylesheets explicitly linked into, or embedded in a document

Methods

DocumentOrShadowRoot.getSelection()
Returns a Selection object representing the range of text selected by the user, or the current position of the caret.
DocumentOrShadowRoot.elementFromPoint()
Returns the topmost element at the specified coordinates.
DocumentOrShadowRoot.elementsFromPoint()
Returns an array of all elements at the specified coordinates.
DocumentOrShadowRoot.caretPositionFromPoint()
Returns a CaretPosition object containing the DOM node containing the caret, and caret's character offset within that node.
Specification Status Comment
DOM
DocumentOrShadowRoot
Living Standard Initial definition.
Shadow DOM
DocumentOrShadowRoot
Working Draft Implementation in Shadow DOM.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 53.0 ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support 未实现 53.0 ? ? ? ? ? 53.0

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