Yes, with this script you can only see the text count and word count of what you write in the text box. That is, you can see the word count of what you write (you cannot see what others have posted). If you want, I can also try that, that is, it will show the word count, character count and how long it will take to read each post.
I understood you well now, was only making the statement base on the part of your comment I read and quoted..
If it’s possible for that to also be added to the script, it will be nice, since your script is to help members know their writing word number. It will also be another added advantage to know how long it will take to read through a particular thread's content, although that reading duration is based on the reader's reading skill/speed.