PerformanceNavigation

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Summary

PerformanceNavigation接口呈现了如何导航到当前文档的信息。

这个类型的对象可以被只读属性Performance.navigation调用。

Properties

PerformanceNavigation 接口不继承任何属性。

PerformanceNavigation.type 只读
一个无符号短整型，表示是如何导航到这个页面的。可能的值如下:
TYPE_NAVIGATE (0)
当前页面是通过点击链接，书签和表单提交，或者脚本操作，或者在url中直接输入地址，type值为0
TYPE_RELOAD (1)
点击刷新页面按钮或者通过Location.reload()方法显示的页面，type值为1
The page was accessed by clicking the Reload button or via the Location.reload() method.
TYPE_BACK_FORWARD (2)
页面通过历史记录和前进后退访问时。type值为2
TYPE_RESERVED (255)
任何其他方式，type值为255
PerformanceNavigation.redirectCount 只读
无符号短整型，表示在到达这个页面之前重定向了多少次。

Methods

Performance 接口没有继承任何方法

PerformanceNavigation.toJSON()
把PerformanceNavigation转换成JSON对象

Specifications

Specification Status Comment
Navigation Timing
PerformanceNavigation		 Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
PerformanceNavigation
Deprecated
Chrome Full support YesEdge Full support YesFirefox Full support 7IE Full support 9Opera No support NoSafari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 7Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yes
redirectCount
Deprecated
Chrome Full support YesEdge Full support 12Firefox Full support 7IE Full support 9Opera No support NoSafari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 7Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yes
toJSON
Deprecated
Chrome Full support 56Edge Full support 12Firefox Full support 25
Notes
Full support 25
Notes
Notes This property can return incorrect values. See bug 1459711.
IE Full support 9Opera No support NoSafari No support NoWebView Android Full support 56Chrome Android Full support 56Firefox Android Full support 25
Notes
Full support 25
Notes
Notes This property can return incorrect values. See bug 1459711.
Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support 6.0
type
Deprecated
Chrome Full support YesEdge Full support 12Firefox Full support 7
Notes
Full support 7
Notes
Notes This property can return incorrect values. See bug 1459711.
IE Full support 9Opera No support NoSafari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 7
Notes
Full support 7
Notes
Notes This property can return incorrect values. See bug 1459711.
Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
See implementation notes.
See implementation notes.

See also

相关主题