PerformanceNavigation: type property
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
The legacy
PerformanceNavigation.type
read-only property returns an unsigned short
containing a constant
describing how the navigation to this page was done.
Warning:
This interface of this property is deprecated in the Navigation Timing Level 2 specification.
Please use the PerformanceNavigationTiming
interface instead.
Value
An unsigned short
.
Possible values are:
Value | Constant name | Meaning |
---|---|---|
0 |
TYPE_NAVIGATE |
The page was accessed by following a link, a bookmark, a form submission, a script, or typing the URL in the address bar. |
1 |
TYPE_RELOAD |
The page was accessed by clicking the Reload button or via the
Location.reload() method.
|
2 |
TYPE_BACK_FORWARD |
The page was accessed by navigating into the history. |
255 |
TYPE_RESERVED |
Any other way. |
Note:
Historically, developers tested for a type
of "TYPE_BACK_FORWARD"
to get an indication of back/forward cache (bfcache) hit rate. This however did not provide any reasons for bfcache blocking, or any other data. The PerformanceNavigationTiming.notRestoredReasons
property should be used to monitor the bfcache, going forward. See Monitoring bfcache blocking reasons for more information.
Specifications
Specification |
---|
Navigation Timing Level 2 # dom-performancenavigation-type |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
type |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Deprecated. Not for use in new websites.
- See implementation notes.
See also
- The
PerformanceNavigation
interface it belongs to.