Add-ons   Development

Introduction to Add-on Development ( 2 ) (34)
Extension development tools (4)

Hi all, I’m excited to share some tools that community members have recently created to help with extension development. If you’ve built something that could be helpful to others, please let us know by replying to this …

About the Development category (1)
When will a toolbar API for WebExtensions be available? (11)
Custom warning dialogues before a page is closed, reloaded, navigated to a new url (9)
Can Match Patterns have an exclusion set? (2)
FireFox for Android: Updating add-ons (11)
Window.onload is randomly emitted or not (4)
Add-on policy ( 2 ) (26)
Question about the accuracy of the index value in object of runtime.onConnect listener (1)
Proper technique to manage variables in injected scripts with those of unknown page scripts (3)
Prevent extension pages from closing when extension is updated (2)
Content script not run for PDF pages (4)
Passing to a Global Variable (2)
Restart Firefox Programmaticly (5)
Which manifest changes will trigger security pop-up on add-on update? (1)
Clarification about what a native application is in runtime.sendNativeMessage (5)
Is there a tabs API method (or any way) of setting the active browser tab based on user action? (3)
Add-on call external file (9)
Add-on BUG URGENT! (8)
Is there a hardcoded delay in `browser. tabs.duplicate(tabId)`? (6)
Opening and scraping invisible tabs (3)
Code works in Scratchpad but not in content script? (3)
Simple *.js is loaded on but not on a "big" site? (3)
Add-on new feature HELP! (7)
Updating Web Extension When User Alters Preferences ( 2 ) (29)
Unable to install my own extension (3)
How to make Promises work between background and foreground scripts? (11)
My Google translate extension does not work on Github due to CORS. How to fix? (3)
Recommended html template for styling Extension Options page (4)