JQuery not detecting id element in partial view MVC4 C#

Question

Hello,
Inside partial view there is a ListTable with id (#ListTable) and row has class name (.rowedit).

When I am try to get this id using below code in main page inside the ajax result, then error occured "typeerror $(...).attr(...) is undefined"

var id = $('#ListTable tr.rowedit').attr('id').substring(5);
alert(id)
Kindly replay me...