In this case, the parent window should have a handle to the one that was opened, and that window should in turn be able to access it's parent using the window.opener object.
The only exception to this where you can use JS to jump context between different windows and tabs is where one window/tab has caused another to open. You can tell Javascript to close the current window, because it has access to its own window, but you cannot tell it to close all windows because it doesn't have access to them. It will know nothing about any other tabs or browser windows, and it cannot access them. The Javascript code running within a given web page will only ever know anything about it's own context - ie the page it is running on. Close Firefox and open it up again and the extension should be functional.I assume you're trying to use Javascript in a web page to do this. The extensions window will come up and show a message that the extension will be installed once you restart Firefox. The following screen will appear, click Install Now. Once you find the extension you are looking for go to its page and click Install Now. Some of the most common extensions are Adblock (which give the option to black any ads on a webpage), All-in-One Gestures (control the browser with mouse gestures), Image Zoom (can zoom in on an image), Tab Browser Preferences (improves tabbed browsing), and ForecastFox (displays weather information from the Weather Channel).Ĭlick on Extensions near the Firefox icon.įrom this page you can browse the extensions or search for a specific extension. These tools can be utilized by power users to make sweeping changes to Firefox and make it perform functions well outside of what a normal browser without extensions is capable of. Extensions are written by independent developers wishing to add a feature they find useful to the browsers.
Extensions add features and functionality to Firefox that is not available in other browsers. Extensions are an extremely important and powerful part of Firefox.
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