使用 Google Maps Javascript API V3 反向地理编码检索邮政编码 [英] Retrieving Postal Code with Google Maps Javascript API V3 Reverse Geocode

问题描述

每当 googlemaps 视口中心发生变化时，我都会尝试使用邮政编码向我的数据库提交查询.我知道这可以通过反向地理编码来完成，例如:

I'm trying to submit a query using the postal code to my DB whenever the googlemaps viewport center changes. I know that this can be done with reverse geocoding with something like:

google.maps.event.addListener(map, 'center_changed', function(){
newCenter();
});
...
function newCenter(){
var newc = map.getCenter();
geocoder.geocode({'latLng': newc}, function(results, status){
if (status == google.maps.GeocoderStatus.OK) {
  var newzip = results[0].address_components['postal_code'];
  }
});
};

当然，这段代码实际上不起作用.所以我想知道我需要如何更改它才能从结果数组中提取邮政编码.谢谢

Of course, this code doesn't actually work. So I was wondering how I would need to change this in order to extract the postal code from the results array. Thanks

推荐答案

好的，我明白了.解决方案比我想要的要丑一些，而且我可能不需要最后一个 for 循环，但这里是其他需要从 address_components[] 中提取废话的人的代码.这是在地理编码器回调函数内

Alright, so I got it. The solution is a little uglier than I'd like, and I probably don't need the last for loop, but here's the code for anyone else who needs to extract crap from address_components[]. This is inside the geocoder callback function

// make sure to initialize i
for(i=0; i < results.length; i++){
            for(var j=0;j < results[i].address_components.length; j++){
                for(var k=0; k < results[i].address_components[j].types.length; k++){
                    if(results[i].address_components[j].types[k] == "postal_code"){
                        zipcode = results[i].address_components[j].short_name;
                    }
                }
            }
    }

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