Is there a way I can manually add a red border to a cell if the data that was entered did not pass my own validation? Currently, I’m using
beforeChange. Inside the callback, I process the new data, my own validation, and all. What I want to achieve is that, if for example, the validation failed, I would mark that cell with a red border, and maybe still stay on that cell – will not proceed to other cell if
Enter was pressed, etc.