在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

只读 HTMLMediaElement property duration indicates the length of the element's media in seconds.

句法

myDuration = htmlMediaElement.duration
					

值

A double-precision floating-point value indicating the duration of the media in seconds. If no media data is available, the value NaN is returned. If the element's media doesn't have a known duration—such as for live media streams—the value of duration is +Infinity .

范例

var obj = document.createElement('video');
console.log(obj.duration); // NaN
					

规范

规范	状态	注释
HTML 实时标准 The definition of 'HTMLMediaElement.duration' in that specification.	实时标准
HTML5 The definition of 'HTMLMediaElement.duration' in that specification.	推荐	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
duration	Chrome 43	Edge 12	Firefox 3.5	IE 9	Opera Yes	Safari 6	WebView Android 43	Chrome Android 43	Firefox Android Yes	Opera Android Yes	Safari iOS Yes	Samsung Internet Android 4.0

图例

完整支持

完整支持

另请参阅

• Web media technologies
• HTMLMediaElement.currentTime : The current playback position of the media
• <audio> and <video> 元素

元数据

• 最后修改： Nov 12, 2019

相关话题

1. HTMLMediaElement
2. 特性

   1. audioTracks
   2. autoplay
   3. buffered
   4. controller
   5. controls
   6. controlsList
   7. crossOrigin
   8. currentSrc
   9. currentTime
   10. defaultMuted
   11. defaultPlaybackRate
   12. duration
   13. ended
   14. error
   15. initialTime
   16. loop
   17. mediaGroup
   18. muted
   19. networkState
   20. onerror
   21. paused
   22. playbackRate
   23. readyState
   24. seekable
   25. sinkId
   26. src
   27. srcObject
   28. textTracks
   29. videoTracks
   30. volume
3. 方法

   1. canPlayType()
   2. captureStream()
   3. fastSeek()
   4. load()
   5. msInsertAudioEffect()
   6. pause()
   7. play()
   8. seekToNextFrame()
   9. setMediaKeys()
   10. setSinkId()
4. 事件

   1. abort
   2. canplay
   3. canplaythrough
   4. durationchange
   5. emptied
   6. ended
   7. error
   8. loadeddata
   9. loadedmetadata
   10. loadstart
   11. pause
   12. play
   13. progress
   14. ratechange
   15. seeked
   16. seeking
   17. stalled
   18. suspend
   19. timeupdate
   20. volumechange
   21. waiting
5. 继承：

   1. HTMLElement
   2. 元素
   3. 节点
   4. EventTarget
6. HTML DOM 相关页面

   1. BeforeUnloadEvent
   2. DOMStringMap
   3. ErrorEvent
   4. GlobalEventHandlers
   5. HTMLAnchorElement
   6. HTMLAreaElement
   7. HTMLAudioElement
   8. HTMLBRElement
   9. HTMLBaseElement
   10. HTMLBaseFontElement
   11. HTMLBodyElement
   12. HTMLButtonElement
   13. HTMLCanvasElement
   14. HTMLContentElement
   15. HTMLDListElement
   16. HTMLDataElement
   17. HTMLDataListElement
   18. HTMLDialogElement
   19. HTMLDivElement
   20. HTMLDocument
   21. HTMLElement
   22. HTMLEmbedElement
   23. HTMLFieldSetElement
   24. HTMLFormControlsCollection
   25. HTMLFormElement
   26. HTMLFrameSetElement
   27. HTMLHRElement
   28. HTMLHeadElement
   29. HTMLHeadingElement
   30. HTMLHtmlElement
   31. HTMLIFrameElement
   32. HTMLImageElement
   33. HTMLInputElement
   34. HTMLIsIndexElement
   35. HTMLKeygenElement
   36. HTMLLIElement
   37. HTMLLabelElement
   38. HTMLLegendElement
   39. HTMLLinkElement
   40. HTMLMapElement
   41. HTMLMetaElement
   42. HTMLMeterElement
   43. HTMLModElement
   44. HTMLOListElement
   45. HTMLObjectElement
   46. HTMLOptGroupElement
   47. HTMLOptionElement
   48. HTMLOptionsCollection
   49. HTMLOutputElement
   50. HTMLParagraphElement
   51. HTMLParamElement
   52. HTMLPictureElement
   53. HTMLPreElement
   54. HTMLProgressElement
   55. HTMLQuoteElement
   56. HTMLScriptElement
   57. HTMLSelectElement
   58. HTMLShadowElement
   59. HTMLSourceElement
   60. HTMLSpanElement
   61. HTMLStyleElement
   62. HTMLTableCaptionElement
   63. HTMLTableCellElement
   64. HTMLTableColElement
   65. HTMLTableDataCellElement
   66. HTMLTableElement
   67. HTMLTableHeaderCellElement
   68. HTMLTableRowElement
   69. HTMLTableSectionElement
   70. HTMLTemplateElement
   71. HTMLTextAreaElement
   72. HTMLTimeElement
   73. HTMLTitleElement
   74. HTMLTrackElement
   75. HTMLUListElement
   76. HTMLUnknownElement
   77. HTMLVideoElement
   78. HashChangeEvent
   79. 历史
   80. ImageData
   81. 定位
   82. MessageChannel
   83. MessageEvent
   84. MessagePort
   85. Navigator
   86. NavigatorGeolocation
   87. NavigatorID
   88. NavigatorLanguage
   89. NavigatorOnLine
   90. NavigatorPlugins
   91. PageTransitionEvent
   92. Plugin
   93. PluginArray
   94. PopStateEvent
   95. PortCollection
   96. PromiseRejectionEvent
   97. RadioNodeList
   98. Transferable
   99. ValidityState
   100. Window
   101. WindowBase64
   102. WindowEventHandlers
   103. WindowTimers