`$.getJSON("../Common/WebCity.ashx", { level: 0 }, function (data) { for (var i = 0; i < data.length; i++) { $("#areas").append($("<option value='" + data[i].id + "'>" + data[i].text + "</option>")); } });

$("#areas").change(function () {            if ($("#areas").val() != "-1" && $("#areas").val() != "0") {                $.getJSON("../Common/WebCity.ashx", { level: 1, pid: $("#areas").val() }, function(data) {                    $("#province").empty();                    for (var i = 0; i < data.length; i++) {                        $("#province").append($("" + data[i].text + ""));                    }                    $("#province").change();                });            } else {                $("#province").empty();                $("#city").empty();            }        });        $("#province").change(function () {            $("#city").empty();            $.getJSON("../Common/WebCity.ashx", { level: 2, pid: $("#province").val() }, function (data) {                for (var i = 0; i < data.length; i++) {                    $("#city").append($("
    
     " + data[i].text + "
    
"));                }                $("#selectAll").attr("checked", "");                loadChecked();            });        });        $("input[id='selectAll']").click(function () {            var isChecked = this.checked;            $(this).parent().parent().find(".select input").each(function (i) {                this.checked = isChecked;                if (isChecked && $("#divSelCity #city" + this.value).length == 0) {                    $("#divSelCity").append($("
    
     " + $(this).parent().text() + "
    
"));                }                else {                    $("#city" + this.value).remove();                }            });        });`