Different between jquery-1.10.2 and jquery-1.8.3 about $(obj).attr("href")

Different between jquery-1.10.2 and jquery-1.8.3 about $(obj).attr("href")

The different between jquery-1.10.2 and jquery-1.8.3 about $(obj).attr("href");?

why my function $(this).attr(g.sysAttribute[j]) is ok in  jquery-1.8.3, but error in  jquery-1.10.2