{"json_modified": "2016-03-28T08:43:21.869317", "uuid": "36851c47-ed2c-4596-bf68-2362053a34d1", "title": "preferences/event-target", "url": "/en-US/docs/Mozilla/Add-ons/SDK/Low-Level_APIs/preferences_event-target", "tags": ["Add-on SDK"], "translations": [], "modified": "2016-01-15T10:31:06", "label": "preferences/event-target", "localization_tags": [], "locale": "en-US", "id": 139177, "last_edit": "2016-01-15T10:31:05", "summary": "Listen to changes to the <a href=\"/en-US/docs/Mozilla/Preferences\">Preferences</a> system in Firefox.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Globals", "title": "Globals"}, {"id": "Constructor", "title": "Constructor"}, {"id": "PrefsTarget(options)", "title": null}, {"id": "Parameters", "title": "Parameters"}, {"id": "Example", "title": "Example"}], "slug": "Mozilla/Add-ons/SDK/Low-Level_APIs/preferences_event-target", "review_tags": []}