I’m trying to write (for fun) a webextension that let me navigate a webpage with my keyboard. It’s a bit like a minimalist version of Tridactyl. However, I’m facing a problem.
The problem is that some websites (e.g. Twitter) also use keyboard navigation for their interface. So, if my webextension create an eventlistener that call a function everytime I press, for example, the letter J and the webpage also has an eventlistener for that key then the webpage prevent my eventlistener to work.
My question is: How could I temporarily block an (or all) eventlistener from a webpage but still have the possibility to reactivate them if needed?
I know it’s possible since Tridactyl does it but I haven’t find where the magic happens in their code. It isn’t a small codebase!