jQuery selectable（）通过ajax发布帖子，其中选择在发布之前循环其历史记录

I have a table that a user can select multiple rows. Selected rows have unique ID which is then aggregated into a string and POSTed to a php file. It all works fantastic except I have one problem. If the rows are selected, re-selected a number of times it does not POST the last status of the selection. So when I look into the log this is what I basically see:I have a table that a user can select multiple