I have a grid in which I conditionally allow editing of a column. I do this by conditionally applying the readonly attribute, like so:
$("#my_column_name").attr("readonly", true);
Chrome 57.0.2987.98 respects this, and I can't click into the cell to edit it.
IE 11.0.9600.x, however, allows me to click into the cell and prepend values to the cell's existing value.
Thanks,
Duke