长数组(Positions_Check)

短数组(PositionTitlesParent_Check)   

 

for (var i = 0; i < PositionTitlesParent_Check.length; i++) {

        for (var j = 0; j < Positions_Check.length; j++) {

            if (PositionTitlesParent_Check[i] == Positions_Check[j]) {

                Positions_Check.splice($.inArray(Positions_Check[j], Positions_Check), 1);

                j--;

            }

        }

    }