PerformanceNavigation - Web APIs 编辑

This interface is deprecated in the Navigation Timing Level 2 specification. Please use the PerformanceNavigationTiming interface instead.

The legacy PerformanceNavigation interface represents information about how the navigation to the current document was done.

An object of this type can be obtained by calling the Performance.navigation read-only attribute.

Properties

The PerformanceNavigation interface doesn't inherit any properties.

PerformanceNavigation.type Read only

An unsigned short which indicates how the navigation to this page was done. Possible values are:

TYPE_NAVIGATE (0)

The page was accessed by following a link, a bookmark, a form submission, or a script, or by typing the URL in the address bar.

TYPE_RELOAD (1)

The page was accessed by clicking the Reload button or via the Location.reload() method.

TYPE_BACK_FORWARD (2)

The page was accessed by navigating into the history.

TYPE_RESERVED (255)

Any other way.

PerformanceNavigation.redirectCount Read only

An unsigned short representing the number of REDIRECTs done before reaching the page.

Methods

The Performance interface doesn't inherit any methods.

PerformanceNavigation.toJSON()

Is a jsonizer returning a json object representing the PerformanceNavigation object.

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The Performance that allows access to an object of this type.
• PerformanceNavigationTiming (part of Navigation Timing Level 2)