« Documentation Home


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 insert() method provides a way to insert a browser tab into this browser tab group, before the specified child, if provided.



void insert (BrowserTab tab, optional BrowserTab child)


The following example creates a button on the browser toolbar. When the button is clicked, a tab group is created containing two tabs. Then the currently selected tab is inserted into the new tab group, before the second tab.

// The background process (e.g. index.html) 

// Specify the properties of the button before creating it.
var UIItemProperties = {
  disabled: false,
  title: "Example extension",
  icon: "images/icon_18.png",
  onclick: function() {
    // Create two tabs with specified URLs
    var tab1 = opera.extension.tabs.create({url: 'http://www.reddit.com/'});
    var tab2 = opera.extension.tabs.create({url: 'http://www.digg.com/'});
    // Create a tab group containing the above two tabs
    var tabGroup = opera.extension.tabGroups.create([tab1, tab2]);
    // Insert the currently selected tab into the middle of the new tab group
    var tab3 = opera.extension.tabs.getSelected();
    tabGroup.insert(tab3, tab2);

// Create the button and add it to the toolbar.
var button = opera.contexts.toolbar.createItem( UIItemProperties );