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This documentation relates to Opera's now deprecated .oex Extension API framework for Opera versions <= 12.15 and also provided by our OEX2NEX shim library.

For the latest Opera Extensions API documentation for Opera versions > 12.15 please consult the latest Opera Extensions API documentation online.


The id attribute is a settable attribute that can be used to identify the source of a click event if necessary. This attribute defaults to an empty string.


DOMString id


The following example creates an item in the context menu with a specified ID. When the item is clicked, its ID is shown in the console.

  The configuration file ('config.xml').
<?xml version='1.0' encoding='utf-8'?>
<widget xmlns="http://www.w3.org/ns/widgets">
    <feature name="opera:contextmenus"/>
// The background process (e.g. index.html)

if (opera.contexts.menu) {
  var menu = opera.contexts.menu;
  // Create a menu item properties object
  var itemProps = {
    id: 'context001',
    title: 'Context Menu Example'

  // Create a menu item with the specified properties
  var item = menu.createItem(itemProps);
  // Add the menu item to the context menu
  item.onclick = function(event) {
    // Show the ID of the menu item
    console.log('Item ID: ' + event.target.id);