widget element

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The <widget> element is the container element under which the rest of the elements of the config.xml file go. The following attributes are associated with it.

  • id: A URL that uniquely identifies the widget or extension.
    • This is used by the browser for identifying installations and for automatically updating the extension.
    • The id is set automatically by the Opera extensions repository when a new extension is uploaded.
    • Developers should add an id attribute during development to avoid installing multiple instances of the same extension.
  • version: Specifies a version of the extension.


<?xml version="1.0" encoding="utf-8"?>
<widget xmlns="http://www.w3.org/ns/widgets" id="http://example.com/myExtension" version="1.0">

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