NavigatorConcurrentHardware

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.

注意: 此特征可用于 Web 工作者 .

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 Comment
HTML Living Standard
The definition of 'NavigatorConcurrentHardware' in that specification.
实时标准 初始定义。

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
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

  1. NavigatorConcurrentHardware
  2. 特性
    1. hardwareConcurrency
  3. Related pages for HTML DOM
    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
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    52. HTMLParamElement
    53. HTMLPictureElement
    54. HTMLPreElement
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    56. HTMLQuoteElement
    57. HTMLScriptElement
    58. HTMLSelectElement
    59. HTMLShadowElement
    60. HTMLSourceElement
    61. HTMLSpanElement
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    63. HTMLTableCaptionElement
    64. HTMLTableCellElement
    65. HTMLTableColElement
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    67. HTMLTableElement
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    70. HTMLTableSectionElement
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    79. HashChangeEvent
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    101. Window
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    103. WindowEventHandlers
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