I am trying to make a Chrome extension for personal use that makes all the password fields type="text", so I can see the clear passwords. (I know that I can probably find something like this in the Chrome store, but it’s something I want to do myself).
I am however having a hard time accessing the actual page content (the page I’m viewing in the tab). If I do
document.getElementById('text')
this selects the element from background.html not the page I’m viewing. How can I access the actual page?
Also, is there a way I can include an external javascript file so I can use functions from there?
You would need to use content script – javascript file injected into an actual page with access to DOM and events.