I have this line of code in contentscript.js file - Chrome extension:
event.target.innerHTML = txt;
this line is not implementable on Facebook comment controls.
That is to say , I cannot change the text in the control (the comment field).
I am trying to correct a wrong text (gebberish) in a text fields. It works well on other places but not in Facebook comment fields.
The truth is , that this line "event.target.innerHTML = txt;" is performed well, and the content of 'txt' is set into the target control (a comment field which, in fact, is a <p> element of html - in Facebook),
but, then, it turns back and the original text is displayed.
This very question was asked two years ago by a stackoverflow member named @mipsc here is the link.
As mipsc assumed there, there is a prevention set by Facebook which does not allow changes.
I cannot comment on mipsc question there because I do not have enough reputation level in stackoverflow.
So I try here to get information if there is a way to solve this, besides by getting a technical permition from Facebook.
