Question

我正在使用NPM Geocoder将位置转换为纬度和经度。但是我不知道如何从输出拉出lat和long。

JSON在下面，我想让第59行和第60行的内容成为一个新变量。我该怎么做呢？

这不起作用：

   var location = data.results.geometry.location.lat;

_ JSON：

    {
  "results": [
    {
      "address_components": [
        {
          "long_name": "Kendall Park",
          "short_name": "Kendall Park",
          "types": [
            "neighborhood",
            "political"
          ]
        },
        {
          "long_name": "South Brunswick Township",
          "short_name": "South Brunswick Township",
          "types": [
            "locality",
            "political"
          ]
        },
        {
          "long_name": "Middlesex County",
          "short_name": "Middlesex County",
          "types": [
            "administrative_area_level_2",
            "political"
          ]
        },
        {
          "long_name": "New Jersey",
          "short_name": "NJ",
          "types": [
            "administrative_area_level_1",
            "political"
          ]
        },
        {
          "long_name": "United States",
          "short_name": "US",
          "types": [
            "country",
            "political"
          ]
        }
      ],
      "formatted_address": "Kendall Park, South Brunswick Township, NJ, USA",
      "geometry": {
        "bounds": {
          "northeast": {
            "lat": 40.4335151,
            "lng": -74.54167489999999
          },
          "southwest": {
            "lat": 40.3944258,
            "lng": -74.586016
          }
        },
        "location": {
          "lat": 40.4209391,  //MAKE THIS A NEW VARIABLE
          "lng": -74.560711
        },
        "location_type": "APPROXIMATE",
        "viewport": {
          "northeast": {
            "lat": 40.4335151,
            "lng": -74.54167489999999
          },
          "southwest": {
            "lat": 40.3944258,
            "lng": -74.586016
          }
        }
      },
      "place_id": "ChIJqbniAsTCw4kRUI0mXQpaGAc",
      "types": [
        "neighborhood",
        "political"
      ]
    }
  ],
  "status": "OK"
}

Answer 1

data.results是一个数组，试试这个：

   var location = BuildLatLng(data.results[0].geometry.location.lat,
                              data.results[0].geometry.location.lng);

其中BuildLatLng()只是您需要在框架中使用的内容，相当于Google Maps JavaScript API中的google.maps.LatLng。

当你在这里时，想想你是否真的想要总是拿出第一个结果。理想情况下，您的应用应查看每个results[i].types以决定使用哪个。

Google反向geocache API：制作lat＆amp;从JSON长变量

1 个答案: