Question

我试图从Google地理定位API结果中仅获取县名。不幸的是，该县并不总是在结果的同一地点，所以我需要通过识别键administrative_area_level_2

抓住它

这是我的电话：

$.getJSON( {
    url  : 'http://maps.googleapis.com/maps/api/geocode/json?latlng=' + position.coords.latitude + ',' + position.coords.longitude + '&sensor=true',
    data : {
        sensor  : false
    },
    success : function( data, textStatus ) {
        var county = data.results[0].address_components[4].long_name;
        alert('County: ' + county);
    }
});

这适用于我所在的县，但不适用于其他县，因为address_components[4]并不总是县。但是，我注意到该县始终与administrative_area_level_2

相关联

以下是一个示例回复：

{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "Edge of Everglades Trail",
               "short_name" : "Edge of Everglades Trail",
               "types" : [ "route" ]
            },
            {
               "long_name" : "Homestead",
               "short_name" : "Homestead",
               "types" : [ "locality", "political" ]
            },
            {
               "long_name" : "Miami-Dade County",
               "short_name" : "Miami-Dade County",
               "types" : [ "administrative_area_level_2", "political" ]
            },
            {
               "long_name" : "Florida",
               "short_name" : "FL",
               "types" : [ "administrative_area_level_1", "political" ]
            },
            {
               "long_name" : "United States",
               "short_name" : "US",
               "types" : [ "country", "political" ]
            },
            {
               "long_name" : "33031",
               "short_name" : "33031",
               "types" : [ "postal_code" ]
            }
         ],
...

我如何获得与administrative_area_level_2类型相关联的“long_name”？

Answer 1

要从地址组件数组获取administrative_area_level_2，您可以使用Array.prototype.filter()和Array.prototype.includes()个功能。

var filtered_array = data.results[0].address_components.filter(function(address_component){
    return address_component.types.includes("administrative_area_level_2");
}); 
var county = filtered_array.length ? filtered_array[0].long_name: "";

您还可以使用反向地理编码直接搜索administrative_area_level_2

$.getJSON( {
    url  : 'http://maps.googleapis.com/maps/api/geocode/json?latlng=' + position.coords.latitude + ',' + position.coords.longitude + '&result_type=administrative_area_level_2',
    data : {
        sensor  : false
    },
    success : function( data, textStatus ) {
        var filtered_array = data.results[0].address_components.filter(function(address_component){
            return address_component.types.includes("administrative_area_level_2");
        }); 
        var county = filtered_array.length ? filtered_array[0].long_name: "";
        alert('County: ' + county);
    }
});

我希望这有帮助！

如何从Google Geocoding API中仅获取administrative_area_level_2？

1 个答案: