Document.fullscreen

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句法
范例
规范
浏览器兼容性
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弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

过时 Document 接口的 fullscreen read-only property reports whether or not the document is currently displaying content in full-screen mode.

Although this property is read-only, it will not throw if it is modified (even in strict mode); the setter is a no-operation and it will be ignored.

注意： Since this property is deprecated, you can determine if full-screen mode is active on the document by checking to see if Document.fullscreenElement 不是 null .

句法

var isFullScreen = document.fullscreen;

值

A Boolean value which is true if the document is currently displaying an element in full-screen mode; otherwise, the value is false.

范例

This simple function reports whether or not full-screen mode is currently active, using the obsolete fullscreen 特性。

function isDocumentInFullScreenMode() {
  return document.fullscreen;
}

This next example, on the other hand, uses the current fullscreenElement property to determine the same thing:

function isDocumentInFullScreenMode() {
  return document.fullscreenElement !== null;
}

若 fullscreenElement isn't null , this returns true , indicating that full-screen mode is in effect.

规范

规范	状态	注释
全屏 API The definition of 'Document.fullscreen' in that specification.	实时标准	Initial definition (as an obsolete property).

浏览器兼容性

The compatibility table on 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
`fullscreen` 弃用	Chrome 71 71 15 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Edge ≤79 ≤79 ≤79 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Firefox 64 64 不支持 49 — 65 Disabled Disabled From version 49 until version 65 (exclusive): this feature is behind the `full-screen-api.unprefix.enabled` preference (needs to be set to `true` ). To change preferences in Firefox, visit about:config. 不支持 9 — 65 Alternate Name Alternate Name Uses the non-standard name: `mozFullScreen`	IE No	Opera 58 58 15 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Safari 6 Alternate Name 6 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullScreen`	WebView Android 71 71 ≤37 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Chrome Android 71 71 18 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Firefox Android 64 64 不支持 49 — 65 Disabled Disabled From version 49 until version 65 (exclusive): this feature is behind the `full-screen-api.unprefix.enabled` preference (needs to be set to `true` ). To change preferences in Firefox, visit about:config. 不支持 9 — 65 Alternate Name Alternate Name Uses the non-standard name: `mozFullScreen`	Opera Android 50 50 14 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`	Safari iOS 6 Alternate Name 6 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullScreen`	Samsung Internet Android 10.0 10.0 1.0 Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullscreen`

图例

完整支持
不支持
弃用。不要用于新网站。
用户必须明确启用此特征。

另请参阅

元数据

最后修改： Mar 18, 2019

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题