How to add line class to a specific line dynamically

[bambooom]

Hi, I previously used v5 addLineClass and removeLineClass to some specific line to mark/remove error line.
I just switched to v6. I’ve read the zebra stripes example. But I don’t understand how to add the extra class to a specific line dynamically.

[marijn]

You set up an extension, similar to the zebra stripe example, that maintains line decorations for the lines that you want to style, and updates them as appropriate on transactions.

[bambooom]

Thanks, I’ve tried and it works. But how can I also add the same decoration for the line number part of the same line?

[marijn]

That can be done separately with gutterLineClass.