css - 有什么办法能够使下拉框能够动态扩展大小?

Question

1,使用angular动态获取地址信息并自动生成地址下拉列表:
代码如下:

<select name="graduated_province" ng-model="graduated_province" ng-options="pro.area_id as pro.area_name for pro in province" ng-change="areaChoose('city')">
    <option value="" label="请选择" selected="selected">请选择</option>
</select>
<select name="graduated_city" ng-model="graduated_city" ng-options="city.area_id as city.area_name for city in city" ng-change="areaChoose('district')">
    <option value="" label="请选择" selected="selected">请选择</option>
</select>
<select name="graduated_district" ng-model="graduated_district" ng-options="dist.area_id as dist.area_name for dist in district">
    <option value="" label="请选择" selected="selected" >请选择</option>
</select>

效果如下:

那么问题来了,因为是通过ajax获取地址数据然后angular生成的列表,所以在

这样的网络情况下,如果你在生成下拉框之前点击这个即将生成的下拉框,会出现:

这样的情况.

所以我想问下有什么办法能够使下拉框能够动态扩展大小?

Answer 1

The simplest thing is to recommend you to use custom components. Simulate a drop-down list.

Try setting a minimum height

Answer 2

It is best to attach the data of the default items of the first level select when the page is loaded.

Answer 3

Has the original poster solved it? urgent need! ! ! !