如何从谷歌地图API获取国家？ [英] How to get country from google maps api?

问题描述

我使用这个脚本：

  var place = autocomplete.getPlace（）; 
 latitude = place.geometry.location.lat（）; 
 longitude = place.geometry.location.lng（）; 
 
 street_number = place.address_components [0] .long_name; 
 route = place.address_components [1] .long_name; 
 locality = place.address_components [2] .long_name; 
 administrative_area_level_1 = place.address_components [3] .long_name; 
 country = place.address_components [5] .long_name; 
 postal_code = place.address_components [6] .long_name; 
  

当用户键入完整地址时，可以正常工作。
但是，当用户输入ONLY城市或城市时，则国家/地区值不在位置.address_components [5]但是place.address_components [2]：

如何知道什么字段符合返回数组的索引？

解决方案

您不应该依赖元素的索引。 address_components数组。相反，您必须分析类型字段以查找国家/地区的相应地址组件。

可以使用 Array.prototype.filter（）和 Array.prototype.includes（）函数。

  var filtered_array = place.address_components.filter（function（address_component）{
 return address_component.types.includes（国家）; 
}）; 
 var country = filtered_array.length？ filtered_array [0] .long_name：; 
  

I use this script:

var place = autocomplete.getPlace();
latitude = place.geometry.location.lat();
longitude = place.geometry.location.lng();

street_number = place.address_components[0].long_name;
route = place.address_components[1].long_name;
locality = place.address_components[2].long_name;
administrative_area_level_1 = place.address_components[3].long_name;
country = place.address_components[5].long_name;
postal_code = place.address_components[6].long_name;

Which works fine when user types in full address. But when user types in ONLY city or city, then country value is not in place.address_components[5] but in place.address_components[2] :

How to know what field fits the index of the returned array ?

解决方案

You shouldn't rely on index of element in place.address_components array. Instead you have to analyze the "types" field to find the corresponding address component for the country.

It can be done with Array.prototype.filter() and Array.prototype.includes() functions.

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

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