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• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

delegatesFocus 只读特性在 ShadowRoot interface returns a boolean that indicates whether delegatesFocus was set when the shadow was attached (see Element.attachShadow() ).

This is currently an experimental non-standard feature, available only in Chrome.

句法

var df = shadowRoot.delegatesFocus
					

值

A boolean value — true if the shadow root does delegate focus, false if it doesn't.

范例

let customElem = document.querySelector('my-shadow-dom-element');
let shadow = customElem.shadowRoot;
  ...
// Does it delegate focus?
let hostElem = shadow.delegatesFocus;
					

规范

This feature is not currently in a specification.

浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
delegatesFocus	Chrome 57	Edge 79	Firefox ?	IE No	Opera ?	Safari No	WebView Android 57	Chrome Android 57	Firefox Android ?	Opera Android ?	Safari iOS No	Samsung Internet Android 7.0

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

元数据

• 最后修改： Mar 30, 2019

相关话题

1. ShadowRoot
2. 特性

   1. delegatesFocus
   2. host
   3. innerHTML
   4. mode
3. 继承：

   1. DocumentFragment
   2. 节点
   3. EventTarget