{"json_modified": "2016-03-28T08:30:39.661321", "uuid": "d6a6c9ad-37c9-4ba3-9387-c98d66171c98", "title": "IDBOpenDBRequest.onupgradeneeded", "url": "/en-US/docs/Web/API/IDBOpenDBRequest/onupgradeneeded", "tags": ["API", "onupgradeneeded", "storage", "IndexedDB", "Reference", "Property", "Database", "IDBOpenDBRequest", "indexeddb", "Storage"], "translations": [], "modified": "2016-03-11T09:47:33", "label": "IDBOpenDBRequest.onupgradeneeded", "localization_tags": [], "locale": "en-US", "id": 84389, "last_edit": "2016-03-11T09:47:30", "summary": "In the following example you can see the onupgradeneeded handler being used to update the database structure if a database with a higher version number is loaded. For a full working example, see our <a class=\"external\" href=\"https://github.com/mdn/to-do-notifications/tree/gh-pages\">To-do Notifications</a> app (<a class=\"external\" href=\"https://mdn.github.io/to-do-notifications/\">view example live</a>.)", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/IDBOpenDBRequest/onupgradeneeded", "review_tags": []}