<form class="layui-form batchinput-form" action="" id="box-form">

<div class="layui-form-item" >
<div class="layui-input-inline">
<label class="layui-form-label">所在省份：</label>
<div class="layui-input-block" >
<select name="province" id="province" lay-filter="myselect">
      <option value="">请选择省份</option>
     <#list province as provincelist>
<option value="${provincelist.areaId}">${provincelist.fullname}</option>
</#list>
      </select>
</div>
</div>
</div>

<div class="layui-form-item">
<div class="layui-input-inline">
<label class="layui-form-label">所在城市 ：</label>
<div class="layui-input-block">
<select name="City" id="City" lay-filter="myselect2" >
      </select>
</div>
</div>
</div>
<div class="layui-form-item">
<div class="layui-input-inline">
<label class="layui-form-label">所在区域 ：</label>
<div class="layui-input-block">
<select name="Area" id="Area" lay-filter="myselect3">
      </select>
</div>
</div>
</div>

</form>

layui.use(['layer', 'form'], function(){
 var layer = layui.layer
 ,form = layui.form;
 form.on('select(myselect)', function(data){
 var areaId=(data.value).replaceAll(",","");
 $.ajax({
        type: 'POST',
        url: '/shopInfo/findCity',
        data: {areaId:areaId},
        dataType: 'json',
        success: function(data){
        $("#City").html("");
         $.each(data, function(key, val) {
        var option1 = $("<option>").val(val.areaId).text(val.fullname);
              $("#City").append(option1);
              form.render('select');
            }); 
       $("#City").get(0).selectedIndex=0;
        }
    }); 
});

});