省市选择的简单实现(基于zepto.js)

　　　　　　　　　　<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;}