This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The NotRestoredReasonDetails interface of the Performance API represents a single reason why a navigated page was blocked from using the back/forward cache (bfcache).
An array of NotRestoredReasonDetails objects can be accessed via the NotRestoredReasons.reasons property.
reason Read only Experimental
A string describing a reason that the page was blocked from using the back/forward cache.
toJSON() Experimental
A serializer; returns a JSON representation of the NotRestoredReasonDetails object.
See Monitoring bfcache blocking reasons for examples.
| Specification |
|---|
| HTML> # notrestoredreasondetails> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
NotRestoredReasonDetails |
125 | 125 | No | 111 | No | 125 | No | 83 | No | 27.0 | 125 | No |
reason |
125 | 125 | No | 111 | No | 125 | No | 83 | No | 27.0 | 125 | No |
toJSON |
125 | 125 | No | 111 | No | 125 | No | 83 | No | 27.0 | 125 | No |
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https://developer.mozilla.org/en-US/docs/Web/API/NotRestoredReasonDetails