文本框文本自动补全效果示例分享(2)

Cimpletion_Bind();
                        break;
                }

});
            Completion_Obj.keydown(function (event) {
                switch (event.keyCode) {
                    case 13:
                        break;
                    case 38:
                        if (Completion_N == 0) {
                            Completion_N = (Completion_Obj_Show.find("li").length - 1);
                        } else if (Completion_N != 0) {
                            Completion_N = Completion_N - 1;
                        }
                        //alert(Completion_N);
                        Completion_Obj_Show.find("li").find("a").removeClass("Completion-guess-list-hover");
                        Completion_Obj_Show.find("li").eq(Completion_N).find("a").addClass("Completion-guess-list-hover");
                        Completion_Obj.val(Completion_Obj_Show.find("li").eq(Completion_N).find("ul").text());

                        break;
                    case 40:
                        if (Completion_N + 1 < Completion_Obj_Show.find("li").length) {
                            Completion_N = Completion_N + 1;
                        } else if (Completion_N + 1 == Completion_Obj_Show.find("li").length) {
                            Completion_N = 0;
                        }
                        Completion_Obj_Show.find("li").find("a").removeClass("Completion-guess-list-hover");
                        Completion_Obj.val(Completion_Obj_Show.find("li").eq(Completion_N).find("ul").text());
                        Completion_Obj_Show.find("li").eq(Completion_N).find("a").addClass("Completion-guess-list-hover");