ShadowRoot.mode

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

实验性: 这是一项实验性技术
在将其用于生产之前,请仔细检查浏览器兼容性表格

modeShadowRoot 的只读属性,它返回 ShadowRoot 创建时的模式 ("open" 或者 "closed") 。

ShadowRootmode 是 "closed" 时, ShadowRoot 的内部实现无法被 JavaScript 访问及修改 — 也就是说将该实现不公开,例如,<video> 标签内部实现无法被 JavaScript 访问及修改。

Syntax

var mode = shadowRoot.mode

Value

值为 "open" 或者 "closed".

Specifications

Specification
DOM
# dom-shadowroot-mode

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
mode

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support