Development

Topic	Replies	Views	Activity
About the Development category	4	4044	March 28, 2024
Get started with Firefox extension development Extensions provide a simple and powerful way to personalize your browsing experience. If you know JavaScript, CSS, and HTML, you can build your own. If you are brand-new to add-on development, you can get started by che…	6	11400	September 6, 2023
Extension development tools developer-tools 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 …	6	10255	June 23, 2021
I can't set the ID for the extension issue	1	19	July 26, 2024
Sidebar for Firefox and Popup for Firefox for Android in a Single Plugin	6	197	July 26, 2024
Why is querySelector returning null?	7	109	July 24, 2024
Need more advice on non-persistence	16	1057	July 24, 2024
Element removed reappears after refresh learning	4	175	July 22, 2024
Addon to indicate are logged in to google?	2	116	July 20, 2024
Configurable browser action for MV3 extension	5	184	July 19, 2024
MV3 background scripts vs serviceworkers - MS/Edge didn't get the memo? manifest-v3	4	332	July 16, 2024
Browser Setting API onChange support	2	506	July 14, 2024
Firefox extension for opening a file with custom extension	11	233	July 12, 2024
One of my Manifest V3 addons is not waking up when it should	41	764	July 11, 2024
Switching focus from the sidebar to the active tab	6	283	July 11, 2024
Missing Context menus (mv3) issue , manifest-v3	8	418	July 10, 2024
How to prevent idle state?	6	998	July 9, 2024
Is it possible to change the context menu on Android?	4	1075	July 5, 2024
Create popup/panel without being on top OR hide URL & tab bar? issue	3	167	July 3, 2024
How to get icon image data of other extension? issue	8	369	June 28, 2024
Can an add-on add a service worker?	3	202	June 27, 2024
Allowing accessing data on all websites for group policy installations with Manifest V3 manifest-v3	8	368	June 27, 2024
How can I prevent websites from logging me out due to inactivity using add-ons? issue	4	3081	June 27, 2024
Is it possible to clear “offline website data” programmatically?	4	239	June 26, 2024
executeScript() for thunderbird/lightning/tasks?	3	283	June 21, 2024
[EDITED] Error: Permission denied to access property "then" issue , manifest-v3	3	1138	June 17, 2024
How to detect an element which is editable by the user feedback	6	737	June 16, 2024
How to get the caret position in ContentEditable elements with respect to the innerText?	2	3815	June 16, 2024
How do I stop infinite loop / expensive call?	6	210	June 13, 2024
"TypeError: browser.tabs is undefined"? issue	5	4644	November 23, 2021

About the Development category

4

4044

March 28, 2024

Get started with Firefox extension development

Extensions provide a simple and powerful way to personalize your browsing experience. If you know JavaScript, CSS, and HTML, you can build your own. If you are brand-new to add-on development, you can get started by che…

6

11400

September 6, 2023

Extension development tools

developer-tools

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 …