{"json_modified": "2016-10-18T16:42:35.731508", "uuid": "c3a16192-5c1d-49e1-9b3d-d484b62513b6", "title": "ConstrainBoolean", "url": "/en-US/docs/Web/API/ConstrainBoolean", "tags": ["API", "Interface", "WebRTC", "ConstrainBooleanParameters", "Reference", "Constraints", "Media Streams API", "Dictionary", "Web", "Media Capture and Streams API", "Media"], "translations": [], "modified": "2016-10-18T16:42:35", "label": "ConstrainBoolean", "localization_tags": [], "locale": "en-US", "id": 196107, "last_edit": "2016-10-03T15:58:55", "summary": "The <strong><code>ConstrainBoolean</code></strong> dictionary is used to specify a constraint for a property whose value is a Boolean value. You can specify an exact value which must be matched, an ideal value that should be matched if at all possible, and a fallback value to attempt to match once all more specific constraints have been applied.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Properties", "title": "Properties"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/ConstrainBoolean", "review_tags": []}