[jQuery] jquery UI sortable, how can i get the text of the that i just moved ?

[kknaru]

what i'm trying to do is to get the text that is contained by the
moved li, after the list item was moved. Is there a way to do that?
i tried: $(ui.item).text() but i get an ui is not defined error (i
imported just jquery.js, ui.core.js and ui.sortable.js , do i have to
import something else?)

thanks