PreferenceObject
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The PreferenceObject interface of the User Peferences API provides attributes and methods for reading and overriding user preferences.
Use PreferencesManager to get access to the PreferenceObject object.
The PreferencesManager interface inherits from EventTarget.
Instance properties
PreferenceObject.overrideRead only Experimental-
The override value if set,
nullotherwise. PreferenceObject.valueRead only Experimental-
The override value if set, the UA default otherwise.
PreferenceObject.validValuesRead only Experimental-
The valid values for the override.
Instance methods
PreferenceObject.clearOverride()Experimental-
If the override is set, reset it to
nulland fireunsupported templ: xdomref PreferenceObject.requestOverride()Experimental-
Request an override of the preference.
Events
changeExperimental-
Fired when the override is set or reset.
Specifications
| Specification |
|---|
| Media Queries Level 5 # preference-object-interface |