easy ui 下拉级联效果 ，下拉框绑定数据select控件

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html代码：

①两个下拉框，一个是省，另一个市

 <tr>
                <td>省:</td>
                <td>
                    <select id="ProvinceId" style="width: 150px;">
                    </select></td>
                <td>市:</td>
                <td>
                    <select id="LocationId" style="width: 150px;">
                    </select></td>
            </tr>

Js代码:

①当用户在选择“省”的下拉框的时候，会传入当前选择“省”的id，然后把“省”的id传给“市”的方法从而查出所有市的数据

//给省绑定数据
            $(‘#ProvinceId‘).combobox({
                url: ‘Handler/CommonDataHandler.ashx?Func=getprovince&format=list‘,
                editable: false, //不可编辑状态
                cache: false,
                //panelHeight: ‘auto‘,//自动高度适合
                panelHeight: "300",
                valueField: ‘ProvinceId‘,
                textField: ‘Province‘,
                onHidePanel: function () {
                    $("#LocationId").combobox("setValue", ‘‘);
                    var ProvinceId = $(‘#ProvinceId‘).combobox(‘getValue‘);

                    $.ajax({
                        type: "POST",
                        url: "Handler/CommonDataHandler.ashx?Func=getcity&format=list&ProvinceId=" + ProvinceId,
                        cache: false,
                        dataType: "json",
                        success: function (data) {
                            $("#LocationId").combobox("loadData", data);
                        }
                    });
                }
            });
            //给市绑定数据
            $(‘#LocationId‘).combobox({
                url: ‘Handler/CommonDataHandler.ashx?Func=getcity&format=list‘,
                editable: false, //不可编辑状态
                cache: false,
                //panelHeight: ‘auto‘,//自动高度适合
                panelHeight: "300",
                valueField: ‘LocationId‘,
                textField: ‘City‘
            });

省的返回数据格式：[{"LocationId":3269,"ProvinceId":1100000,"Province":"北京","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3270,"ProvinceId":1200000,"Province":"天津","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3271,"ProvinceId":1300000,"Province":"河北省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3272,"ProvinceId":1400000,"Province":"山西省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3273,"ProvinceId":1500000,"Province":"内蒙古自治区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3274,"ProvinceId":1600000,"Province":"辽宁省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3275,"ProvinceId":1700000,"Province":"吉林省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3276,"ProvinceId":1800000,"Province":"黑龙江省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3277,"ProvinceId":1900000,"Province":"上海","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3278,"ProvinceId":2000000,"Province":"江苏省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3279,"ProvinceId":2100000,"Province":"浙江省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3280,"ProvinceId":2200000,"Province":"安徽省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3281,"ProvinceId":2300000,"Province":"福建省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3282,"ProvinceId":2400000,"Province":"江西省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3283,"ProvinceId":2500000,"Province":"山东省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3284,"ProvinceId":2600000,"Province":"河南省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3285,"ProvinceId":2700000,"Province":"湖北省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3286,"ProvinceId":2800000,"Province":"湖南省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3287,"ProvinceId":2900000,"Province":"广东省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3288,"ProvinceId":3000000,"Province":"广西壮族自治区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3289,"ProvinceId":3100000,"Province":"海南省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3290,"ProvinceId":3200000,"Province":"重庆","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3291,"ProvinceId":3300000,"Province":"四川省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3292,"ProvinceId":3400000,"Province":"贵州省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3293,"ProvinceId":3500000,"Province":"云南省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3294,"ProvinceId":3600000,"Province":"西藏自治区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3295,"ProvinceId":3700000,"Province":"陕西省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3296,"ProvinceId":3800000,"Province":"甘肃省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3297,"ProvinceId":3900000,"Province":"青海省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3298,"ProvinceId":4000000,"Province":"宁夏回族自治区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3299,"ProvinceId":4100000,"Province":"新疆维吾尔自治区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3300,"ProvinceId":4200000,"Province":"台湾省","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3301,"ProvinceId":4300000,"Province":"香港特别行政区","CountyId":0,"lockey":0,"loclevel":0},{"LocationId":3302,"ProvinceId":4400000,"Province":"澳门特别行政区 ","CountyId":0,"lockey":0,"loclevel":0}]

市的返回数据格式：

[{"LocationId":2920,"ProvinceId":0,"City":"石家庄市","CityId":130100,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"唐山市","CityId":130200,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"秦皇岛市","CityId":130300,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"邯郸市","CityId":130400,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"邢台市","CityId":130500,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"保定市","CityId":130600,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"张家口市","CityId":130700,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"承德市","CityId":130800,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"沧州市","CityId":130900,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"廊坊市","CityId":131000,"CountyId":0,"lockey":0,"loclevel":0},{"LocationId":2920,"ProvinceId":0,"City":"衡水市","CityId":131100,"CountyId":0,"lockey":0,"loclevel":0}]

easy ui 下拉级联效果 ，下拉框绑定数据select控件

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原文地址：http://www.cnblogs.com/foreverfendou/p/4800568.html