Limited Availability

Navigation precommit handlers

The precommitHandler callback option to NavigateEvent's intercept() method returns a promise that defers navigation until the promise resolves. You can use this to change the navigation's URL, state, and history before navigation occurs.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Mar 13, 2026.

Desktop Browser Engine Support

Google Chrome

146

Supported

Mozilla Firefox

148

Supported

Apple Safari

—

Unsupported

Microsoft Edge

146

Supported

Mobile Browser Engine Support

Chrome Android

146

Firefox Android

148

Safari iOS

—

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.NavigateEvent.intercept.precommitHandler_option ↗ api.NavigationPrecommitController ↗ api.NavigationPrecommitController.addHandler ↗ api.NavigationPrecommitController.redirect ↗