在此页

• 特性
• 方法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

NavigatorConcurrentHardware mixin adds to the Navigator interface features which allow Web content to determine how many logical processors the user has available, in order to let content and Web apps optimize their operations to best take advantage of the user's CPU.

The number of logical processor cores is a way to measure the number of threads which can effectively be run at once without them having to share CPUs. Modern computers have multiple physical cores in their CPU (two or four cores is typical), but each physical core is also usually able to run more than one thread at a time using advanced scheduling techniques. So a four-core CPU may return 8. The browser may, however, choose to reduce the number in order to represent more accurately the number of Worker s that can run at once

特性

NavigatorConcurrentHardware.hardwareConcurrency 只读

Returns the number of logical processors which may be available to the user agent. This value is always at least 1, and will be 1 if the actual number of logical processors can't be determined.

方法

NavigatorConcurrentHardware mixin has no methods.

规范

规范	状态	注释
HTML 实时标准 The definition of 'NavigatorConcurrentHardware' 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
NavigatorConcurrentHardware	Chrome 37	Edge ≤18	Firefox 48	IE ?	Opera 24	Safari ?	WebView Android 37	Chrome Android 37	Firefox Android 48	Opera Android 24	Safari iOS ?	Samsung Internet Android 3.0
hardwareConcurrency	Chrome 37	Edge 15	Firefox 48	IE ?	Opera 24	Safari ?	WebView Android 37	Chrome Android 37	Firefox Android 48	Opera Android 24	Safari iOS ?	Samsung Internet Android 3.0
Available in workers	Chrome 37	Edge ≤79	Firefox ?	IE ?	Opera 24	Safari ?	WebView Android 37	Chrome Android 37	Firefox Android ?	Opera Android 24	Safari iOS ?	Samsung Internet Android 3.0

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

另请参阅

• Navigator
• WorkerNavigator

元数据

• 最后修改： Jun 12, 2020

相关话题

1. NavigatorConcurrentHardware
2. 特性

   1. hardwareConcurrency
3. 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. HTMLMediaElement
   42. HTMLMetaElement
   43. HTMLMeterElement
   44. HTMLModElement
   45. HTMLOListElement
   46. HTMLObjectElement
   47. HTMLOptGroupElement
   48. HTMLOptionElement
   49. HTMLOptionsCollection
   50. HTMLOutputElement
   51. HTMLParagraphElement
   52. HTMLParamElement
   53. HTMLPictureElement
   54. HTMLPreElement
   55. HTMLProgressElement
   56. HTMLQuoteElement
   57. HTMLScriptElement
   58. HTMLSelectElement
   59. HTMLShadowElement
   60. HTMLSourceElement
   61. HTMLSpanElement
   62. HTMLStyleElement
   63. HTMLTableCaptionElement
   64. HTMLTableCellElement
   65. HTMLTableColElement
   66. HTMLTableDataCellElement
   67. HTMLTableElement
   68. HTMLTableHeaderCellElement
   69. HTMLTableRowElement
   70. HTMLTableSectionElement
   71. HTMLTemplateElement
   72. HTMLTextAreaElement
   73. HTMLTimeElement
   74. HTMLTitleElement
   75. HTMLTrackElement
   76. HTMLUListElement
   77. HTMLUnknownElement
   78. HTMLVideoElement
   79. HashChangeEvent
   80. 历史
   81. ImageData
   82. 定位
   83. MessageChannel
   84. MessageEvent
   85. MessagePort
   86. Navigator
   87. NavigatorGeolocation
   88. NavigatorID
   89. NavigatorLanguage
   90. NavigatorOnLine
   91. NavigatorPlugins
   92. PageTransitionEvent
   93. Plugin
   94. PluginArray
   95. PopStateEvent
   96. PortCollection
   97. PromiseRejectionEvent
   98. RadioNodeList
   99. Transferable
   100. ValidityState
   101. Window
   102. WindowBase64
   103. WindowEventHandlers
   104. WindowTimers