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Is there ANY WAY to run a javascript on parent process like how we run CSS on userChrome.css?

mohammadmtay
mohammadmtay
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Hello,

I created a loading progress bar for Firefox which uses JavaScript to show how much of the current page is loaded at the bottom of the address bar.

Is there any way I can automate running JavaScript at the opening of a window? Like how we can change the appearance in userChrome.css?

Currently I'm copy pasting the script to console at the start of every window.

Hello, I created a loading progress bar for Firefox which uses JavaScript to show how much of the current page is loaded at the bottom of the address bar. Is there any way I can automate running JavaScript at the opening of a window? Like how we can change the appearance in userChrome.css? Currently I'm copy pasting the script to console at the start of every window.

All Replies (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Yes, it is possible to inject privileged script code into Firefox at startup, but I really have no idea how you would run that particular code.

As a starting point, check out my article: https://www.userchrome.org/what-is-userchrome-js.html