jQuery省级联动(ajax+select)

$(document).ready(function(){

        $("#provinceid").change(function(){

            var $p = $('#provinceid option:selected').val();

            $.ajax({

                type:"POST",

                data:"prvid="+$p,

                url :"/manager/idcs/searchcity",

                success :function(msg){

                    var $obj =  JSON.parse(msg);

                    var $city = $("#cityid option:selected").val();

                    $("#cityid").empty()

                    for ( x in $obj) {

                        if(x == $city) {

                            $option = "<option value="+x+" selected='selected'>"+$obj[x]+"</option>";

                        }else {

                            $option = "<option value="+x+">"+$obj[x]+"</option>";

                        }

                        $($option).appendTo("#cityid")

                    }

                }

            });

        });

        $("#provinceid").trigger('change');

});