windowHandles

browser.windowHandles();

it('should return all window handles', function () {
    browser.url('http://localhost/one.html');
    browser.newWindow('http://localhost/two.html');

    var windowHandles = browser.windowHandles()
    console.log(windowHandles);
    // Outputs something like
    // {
    //    state: 'success',
    //    sessionId: '31dc8253-a27e-4bae-8d20-338d6b0541c9',
    //    hCode: 273402755,
    //    value:
    //    [ 'CDwindow-CBFE1412-8D46-495C-96B4-42E04F9153C0',
    //        'CDwindow-BD7BE568-52F2-4552-B834-FE2D041DCE5B' ],
    //    class: 'org.openqa.selenium.remote.Response',
    //    status: 0
    // }
    // set focus on different windows
    var window1 = windowHandles.value[0];
    var window2 = windowHandles.value[1];
    var title1 = browser.window(window1).getTitle();
    console.log(title1); // title of one.html
    var title2 = browser.window(window2).getTitle();
    console.log(title2); // title of two.html
});