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• 句法
• 规范
• 浏览器兼容性
• 相关话题

featurePolicy 只读特性在 Document interface returns the FeaturePolicy interface which provides a simple API for inspecting the feature policies applied to a specific document.

句法

var policy = iframeElement.featurePolicy
					

值

A FeaturePolicy object that can be used to inspect the Feature Policy settings applied to the document.

规范

规范	状态	注释
Feature Policy	编者草案	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
featurePolicy	Chrome 74 74 Chrome Platform Status incorrectly describes this variable as document.policy . It was renamed in bug 917057 before being shipped in bug 703703 . 不支持 73 — 74 Disabled Disabled From version 73 until version 74 (exclusive): this feature is behind the #enable-experimental-productivity-features preference (needs to be set to 启用 ). To change preferences in Chrome, visit chrome://flags. 不支持 69 — 73 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled ). To change preferences in Chrome, visit	Edge 79 79 Chrome Platform Status incorrectly describes this variable as document.policy . It was renamed in bug 917057 before being shipped in bug 703703 .	Firefox 69 Disabled 69 Disabled Disabled From version 69: this feature is behind the dom.security.featurePolicy.webidl.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config. 不支持 65 — 69 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled ). To change preferences in Firefox, visit about:config.	IE No	Opera 62 62 不支持 60 — 62 Disabled Disabled From version 60 until version 62 (exclusive): this feature is behind the #enable-experimental-productivity-features preference (needs to be set to 启用 ). 不支持 56 — 60 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled From version 56 until version 60 (exclusive): this feature is behind the #enable-experimental-productivity-features preference (needs to be set to 启用 ).	Safari No	WebView Android 74 74 Chrome Platform Status incorrectly describes this variable as document.policy . It was renamed in bug 917057 before being shipped in bug 703703 .	Chrome Android 74 74 Chrome Platform Status incorrectly describes this variable as document.policy . It was renamed in bug 917057 before being shipped in bug 703703 . 不支持 73 — 74 Disabled Disabled From version 73 until version 74 (exclusive): this feature is behind the #enable-experimental-productivity-features preference (needs to be set to 启用 ). To change preferences in Chrome, visit chrome://flags. 不支持 69 — 73 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled ). To change preferences in Chrome, visit	Firefox Android 65 Alternate Name Disabled 65 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled ). To change preferences in Firefox, visit about:config.	Opera Android 48 Alternate Name Disabled 48 Alternate Name Disabled Alternate Name Uses the non-standard name: policy Disabled From version 48: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to 启用 ).	Safari iOS No	Samsung Internet Android 11.0

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

见实现注意事项。

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。

元数据

• 最后修改： Aug 9, 2020

相关话题

1. Document
2. 构造函数

   1. Document()
3. 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
4. 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()
5. 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
6. 继承：

   1. 节点
   2. EventTarget