省市选择(基于zepto.js)

效果如下：

　　　　　　　　　　<div class="clList overflow-h mt75">
                    <select class="pull-left cl-35 select01" id="cityParent">
                        <option>请选择省</option>
                    </select>
                    <select class="pull-left cl-35 select02" id="city">
                        <option>请选择市</option>
                    </select>
                </div>

//测试数据
var _json = [ {
            "areas" : [ {
                "name" : "东城区"
            }, {
                "name" : "西城区"
            }, {
                "name" : "崇文区"
            }, {
                "name" : "宣武区"
            }, {
                "name" : "昌平区"
            }, {
                "name" : "朝阳区"
            }, {
                "name" : "海淀区"
            }, {
                "name" : "丰台区"
            }, {
                "name" : "石景山区"
            }, {
                "name" : "门头沟区"
            }, {
                "name" : "房山区"
            }, {
                "name" : "通州区"
            }, {
                "name" : "顺义区"
            }, {
                "name" : "大兴区"
            }, {
                "name" : "平谷区"
            }, {
                "name" : "怀柔区"
            }, {
                "name" : "密云县"
            }, {
                "name" : "延庆县"
            } ],
            "name" : "北京市"
        },{
            "areas" : [ {
                "name" : "合肥市"
            }, {
                "name" : "滁州市"
            }, {
                "name" : "蚌埠市"
            }, {
                "name" : "芜湖市"
            }, {
                "name" : "淮南市"
            }, {
                "name" : "淮北市"
            }, {
                "name" : "马鞍山市"
            }, {
                "name" : "安庆市"
            }, {
                "name" : "宿州市"
            }, {
                "name" : "阜阳市"
            }, {
                "name" : "亳州市"
            }, {
                "name" : "黄山市"
            }, {
                "name" : "铜陵市"
            }, {
                "name" : "宣城市"
            }, {
                "name" : "六安市"
            }, {
                "name" : "池州市"
            } ],
            "name" : "安徽省"
        }, {
            "areas" : [ {
                "name" : "福州市"
            }, {
                "name" : "厦门市"
            }, {
                "name" : "宁德市"
            }, {
                "name" : "莆田市"
            }, {
                "name" : "泉州市"
            }, {
                "name" : ">"
            }, {
                "name" : "漳州市"
            }, {
                "name" : "龙岩市"
            }, {
                "name" : "三明市"
            }, {
                "name" : "南平市"
            } ],
            "name" : "福建省"
        }, {
            "areas" : [ {
                "name" : "兰州市"
            }, {
                "name" : "临夏州"
            }, {
                "name" : "定西市"
            }, {
                "name" : "平凉市"
            }, {
                "name" : "庆阳市"
            }, {
                "name" : "武威市"
            }, {
                "name" : "金昌市"
            }, {
                "name" : "张掖市"
            }, {
                "name" : "酒泉市"
            }, {
                "name" : "嘉峪关市"
            }, {
                "name" : "天水市"
            }, {
                "name" : "陇南市"
            }, {
                "name" : "甘南州"
            }, {
                "name" : "白银市"
            } ],
            "name" : "甘肃省"
        }];
        function loadCityPar() {
            var cityPar = '<option value="0">请选择省</option>';
            var lenPar = _json.length;   //省市数量
            for(var i=0; i<lenPar; i++){
                var n = i + 1;
                cityPar += '<option value="'+n+'">'+_json[i].name+'</option>';

            }
            $('#cityParent').html(cityPar);
        }
        loadCityPar();

        $(page).on('change','#cityParent',function () {
            var index = $('#cityParent option').not(function(){ return !this.selected }).index();
            var i = index - 1;
            if(i >= 0){
                var city = '<option value="0">请选择市</option>';
                var len = _json[i].areas.length;
                for(var j=0; j<len; j++){
                    var m = j + 1;
                    city += '<option value="'+m+'">'+_json[i].areas[j].name+'</option>';
                }
                $('#city').html(city);
            }
        });

.wgyHospital .select01,.wgyHospital .select02{ padding-left:.3rem; padding-right:.3rem; height:1.6rem; line-height:1.6rem; border:1px solid #ccc; text-align:center;}
.wgyHospital .select01{ border-radius:.75rem 0 0 .75rem;}
.wgyHospital .select02{ border-radius:0 .75rem .75rem 0; border-left:none;}