{"json_modified": "2016-07-21T10:38:47.659955", "uuid": "29c2f9db-3bd2-4e01-b314-31d5c10c17dc", "title": "Modify a web page", "url": "/en-US/docs/Mozilla/Add-ons/WebExtensions/Modify_a_web_page", "tags": [], "translations": [], "modified": "2016-07-21T10:38:47", "label": "Modify a web page", "localization_tags": [], "locale": "en-US", "id": 188624, "last_edit": "2016-07-21T10:38:44", "summary": "One of the most common use cases for a browser add-on is to modify a web page. For example, an add-on might want to change the style applied to a page, hide particular DOM nodes, or inject extra DOM nodes into the page.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Modifying_pages_that_match_a_URL_pattern", "title": "Modifying pages that match a URL pattern"}, {"id": "Modifying_pages_programmatically", "title": "Modifying pages programmatically"}, {"id": "Messaging", "title": "Messaging"}, {"id": "Learn_more", "title": "Learn more"}], "slug": "Mozilla/Add-ons/WebExtensions/Modify_a_web_page", "review_tags": []}