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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

只读 fullscreenEnabled property on the Document interface indicates whether or not full-screen mode is available. Full-screen mode is available only for a page that has no windowed plug-ins in any of its documents, and if all <iframe> elements which contain the document have their allowfullscreen attribute set.

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.

句法

var isFullscreenAvailable = document.fullscreenEnabled;
					

值

A 布尔 value which is true if the document and the elements within can be placed into full-screen mode by calling Element.requestFullscreen() . If full-screen mode isn't available, this value is false .

范例

In this example, before attempting to request full-screen mode for a <video> element, the value of fullscreenEnabled is checked, in order to avoid making the attempt when not available.

function requestFullScreen() {
  if (document.fullscreenEnabled) {
    videoElement.requestFullScreen();
  } else {
    console.log('Your browser cannot use fullscreen right now');
  }
}
					

规范

规范	状态	注释
全屏 API The definition of 'Document.fullscreenEnabled' in that specification.	实时标准	初始定义

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
fullscreenEnabled	Chrome 45 45 Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge 12	Firefox 64 64 不支持 47 — 65 Disabled Disabled From version 47 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 10 — 65 Alternate Name Alternate Name Uses the non-standard name: mozFullScreenEnabled	IE 11 Alternate Name 11 Alternate Name Alternate Name Uses the non-standard name: msFullScreenEnabled	Opera Yes	Safari ?	WebView Android 45 45 Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Chrome Android 45 45 Yes Prefixed Prefixed Implemented with the vendor prefix: webkit	Firefox Android 64 64 不支持 47 — 65 Disabled Disabled From version 47 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 10 — 65 Alternate Name Alternate Name Uses the non-standard name: mozFullScreenEnabled	Opera Android Yes	Safari iOS ?	Samsung Internet Android 5.0 5.0 Yes Prefixed Prefixed Implemented with the vendor prefix: webkit

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

用户必须明确启用此特征。

用户必须明确启用此特征。

使用非标名称。

要求使用供应商前缀或不同名称。

要求使用供应商前缀或不同名称。

另请参阅

• 全屏 API
• 全屏 API 指南
• Element.requestFullscreen()
• Document.exitFullscreen()
• Document.fullscreenElement
• :fullscreen and ::backdrop
• <iframe> allowfullscreen 属性

元数据

• 最后修改： Mar 18, 2019

相关话题

1. 全屏 API
2. Document
3. 构造函数

   1. Document()
4. 特性

   1. alinkColor
   2. all
   3. anchors
   4. applets
   5. bgColor
   6. body
   7. characterSet
   8. childElementCount
   9. children
   10. compatMode
   11. contentType
   12. currentScript
   13. defaultView
   14. designMode
   15. dir
   16. doctype
   17. documentElement
   18. documentURI
   19. documentURIObject
   20. domain
   21. domConfig
   22. 嵌入
   23. fgColor
   24. firstElementChild
   25. forms
   26. fullscreen
   27. fullscreenEnabled
   28. head
   29. height
   30. hidden
   31. 图像
   32. 实现
   33. lastElementChild
   34. lastModified
   35. lastStyleSheetSet
   36. linkColor
   37. 链接
   38. location
   39. mozSyntheticDocument
   40. onabort
   41. onafterscriptexecute
   42. onanimationcancel
   43. onanimationend
   44. onanimationiteration
   45. onauxclick
   46. onbeforescriptexecute
   47. onblur
   48. oncancel
   49. oncanplay
   50. oncanplaythrough
   51. onchange
   52. onclick
   53. onclose
   54. oncontextmenu
   55. oncuechange
   56. ondblclick
   57. ondurationchange
   58. onended
   59. onerror
   60. onfocus
   61. onformdata
   62. onfullscreenchange
   63. onfullscreenerror
   64. ongotpointercapture
   65. oninput
   66. oninvalid
   67. onkeydown
   68. onkeypress
   69. onkeyup
   70. onload
   71. onloadeddata
   72. onloadedmetadata
   73. onloadend
   74. onloadstart
   75. onlostpointercapture
   76. onmousedown
   77. onmouseenter
   78. onmouseleave
   79. onmousemove
   80. onmouseout
   81. onmouseover
   82. onmouseup
   83. onoffline
   84. ononline
   85. onpause
   86. onplay
   87. onplaying
   88. onpointercancel
   89. onpointerdown
   90. onpointerenter
   91. onpointerleave
   92. onpointermove
   93. onpointerout
   94. onpointerover
   95. onpointerup
   96. onreset
   97. onresize
   98. onscroll
   99. onselect
   100. onselectionchange
   101. onselectstart
   102. onsubmit
   103. ontouchcancel
   104. ontouchstart
   105. ontransitioncancel
   106. ontransitionend
   107. onvisibilitychange
   108. onwheel
   109. origin
   110. plugins
   111. popupNode
   112. preferredStyleSheetSet
   113. readyState
   114. referrer
   115. rootElement
   116. 脚本
   117. scrollingElement
   118. selectedStyleSheetSet
   119. styleSheetSets
   120. timeline
   121. title
   122. tooltipNode
   123. URL
   124. visibilityState
   125. vlinkColor
   126. width
   127. xmlEncoding
   128. xmlVersion
5. 方法

   1. adoptNode()
   2. append()
   3. caretRangeFromPoint()
   4. clear()
   5. close()
   6. createAttribute()
   7. createCDATASection()
   8. createComment()
   9. createDocumentFragment()
   10. createElement()
   11. createElementNS()
   12. createEntityReference()
   13. createEvent()
   14. createExpression()
   15. createExpression()
   16. createNodeIterator()
   17. createNSResolver()
   18. createNSResolver()
   19. createProcessingInstruction()
   20. createRange()
   21. createTextNode()
   22. createTouch()
   23. createTouchList()
   24. createTreeWalker()
   25. enableStyleSheetsForSet()
   26. evaluate()
   27. evaluate()
   28. execCommand()
   29. exitFullscreen()
   30. exitPointerLock()
   31. getAnimations()
   32. getBoxObjectFor()
   33. getElementById()
   34. getElementsByClassName()
   35. getElementsByName()
   36. getElementsByTagName()
   37. getElementsByTagNameNS()
   38. hasFocus()
   39. hasStorageAccess()
   40. importNode()
   41. mozSetImageElement()
   42. open()
   43. prepend()
   44. queryCommandEnabled()
   45. queryCommandSupported()
   46. querySelector()
   47. querySelector()
   48. querySelectorAll()
   49. querySelectorAll()
   50. registerElement()
   51. releaseCapture()
   52. replaceChildren()
   53. requestStorageAccess()
   54. write()
   55. writeln()
6. 事件

   1. animationcancel
   2. animationend
   3. animationiteration
   4. animationstart
   5. copy
   6. cut
   7. DOMContentLoaded
   8. drag
   9. dragend
   10. dragenter
   11. dragexit
   12. dragleave
   13. dragover
   14. dragstart
   15. drop
   16. fullscreenchange
   17. fullscreenerror
   18. gotpointercapture
   19. keydown
   20. keypress
   21. keyup
   22. lostpointercapture
   23. paste
   24. pointercancel
   25. pointerdown
   26. pointerenter
   27. pointerleave
   28. pointerlockchange
   29. pointerlockerror
   30. pointermove
   31. pointerout
   32. pointerover
   33. pointerup
   34. readystatechange
   35. scroll
   36. selectionchange
   37. selectstart
   38. touchcancel
   39. touchend
   40. touchmove
   41. touchstart
   42. transitioncancel
   43. transitionend
   44. transitionrun
   45. transitionstart
   46. visibilitychange
   47. wheel
7. 继承：

   1. 节点
   2. EventTarget
8. Related pages for Fullscreen API

   1. Document.exitFullscreen()
   2. Document.fullscreen
   3. Document.onfullscreenchange
   4. Document.onfullscreenerror
   5. DocumentOrShadowRoot.fullscreenElement
   6. Element.onfullscreenchange
   7. Element.onfullscreenerror
   8. Element.requestFullscreen()