LGTM1
On 12/15/25 7:06 a.m., Chromestatus wrote:
*Contact emails*
[email protected]
*Explainer*
https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-navigationtransition-to
*Specification*
https://html.spec.whatwg.org/#dom-navigationtransition-to
*Summary*
Currently NavigationTransition has a "from" property, exposing the old
URL of the navigation. Exposing "to" (a NavigationDestination)
completes this. It is especially useful when using precommit handlers,
as during precommit the current URL has not yet switched to the
destination. Note that navigation.transition is only exposed for
intercepted navigations - which means same-origin document-initiated
navigations.
*Blink component*
UI>Browser>Navigation
<https://issues.chromium.org/issues?q=customfield1222907:%22UI%3EBrowser%3ENavigation%22>
*Web Feature ID*
navigation <https://webstatus.dev/features/navigation>
*Motivation*
Exposing things in navigation.transition helps curating the navigation
experience without having to listen to *all* navigation events.
Specifically, the to/from properties of navigation.transition map
nicely to the to/from route matchers (see
https://github.com/WICG/declarative-partial-updates/blob/main/route-matching-explainer.md)
*Initial public proposal*
https://github.com/whatwg/html/pull/11692
*TAG review*
/No information provided/
*TAG review status*
Pending
*Risks*
*Interoperability and Compatibility*
/No information provided/
/Gecko/: No
signal (https://github.com/mozilla/standards-positions/issues/1324)
But, trending positive... (and supportive enough to justify merging to
HTML).
/WebKit/: No
signal (https://github.com/WebKit/standards-positions/issues/585)
/Web developers/: No signals
/Other signals/:
*WebView application risks*
Does this intent deprecate or change behavior of existing APIs, such
that it has potentially high risk for Android WebView-based applications?
/No information provided/
*Debuggability*
/No information provided/
*Will this feature be supported on all six Blink platforms (Windows,
Mac, Linux, ChromeOS, Android, and Android WebView)?*
Yes
*Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
Yes
*Flag name on about://flags*
/No information provided/
*Finch feature name*
NavigationTransitionDestination
*Rollout plan*
Will ship enabled for all users
*Requires code in //chrome?*
False
*Tracking bug*
https://issues.chromium.org/issues/447171238
*Estimated milestones*
Shipping on desktop 145
Shipping on Android 145
Shipping on WebView 145
*Anticipated spec changes*
Open questions about a feature may be a source of future web compat or
interop issues. Please list open issues (e.g. links to known github
issues in the project for the feature specification) whose resolution
may introduce web compat/interop risk (e.g., changing to naming or
structure of the API in a non-backward-compatible way).
/No information provided/
*Link to entry on the Chrome Platform Status*
https://chromestatus.com/feature/6008183302782976?gate=6022234166657024
*Links to previous Intent discussions*
Intent to Prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68d4ff4d.2b0a0220.29ae18.0091.GAE%40google.com
This intent message was generated by Chrome Platform Status
<https://chromestatus.com>.
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