Guide on extracting latitude and longitude geocode from a JSON response using the Google Maps API and storing them in variables with JavaScript

Question

Guide on extracting latitude and longitude geocode from a JSON response using the Google Maps API and storing them in variables with JavaScript

RETRIEVING GEO LOCATION VIA JSON https://maps.googleapis.com/maps/api/geocode/json?address=KOLKATA&key=API_KEY

{
       "results" : [
          {
             "address_components" : [
                {
                   "long_name" : "Kolkata",
                   "short_name" : "Kolkata",
                   "types" : [ "locality", "political" ]
                },
                {
                   "long_name" : "Kolkata",
                   "short_name" : "Kolkata",
                   "types" : [ "administrative_area_level_2", "political" ]
                },
                {
                   "long_name" : "West Bengal",
                   "short_name" : "WB",
                   "types" : [ "administrative_area_level_1", "political" ]
                },
                {
                   "long_name" : "India",
                   "short_name" : "IN",
                   "types" : [ "country", "political" ]
                }
             ],
             "formatted_address" : "Kolkata, West Bengal, India",
             "geometry" : {
                "bounds" : {
                   "northeast" : {
                      "lat" : 23.0078201,
                      "lng" : 88.5428696
                   },
                   "southwest" : {
                      "lat" : 22.3436288,
                      "lng" : 88.19430439999999
                   }
                },
                "location" : {
                   "lat" : 22.572646,
                   "lng" : 88.36389500000001
                },
                "location_type" : "APPROXIMATE",
                "viewport" : {
                   "northeast" : {
                      "lat" : 23.0078201,
                      "lng" : 88.5428696
                   },
                   "southwest" : {
                      "lat" : 22.3436288,
                      "lng" : 88.19430439999999
                   }
                }
             },
             "place_id" : "ChIJZ_YISduC-DkRvCxsj-Yw40M",
             "types" : [ "locality", "political" ]
          }
       ],
       "status" : "OK"
    }

JAVASCRIPT FUNCTION FOR RETRIEVING LATITUDE AND LONGITUDE

$(function() {
    $("#home_city_select").change(function() {
        //alert( $('option:selected', this).text() );
        var city = document.getElementById("home_city_select").value;
        var ltd;
        var lng;

        var jsonLtdLng="https://maps.googleapis.com/maps/api/geocode/json?address="+city+"&key=API_KEY";
        //alert(JSON.stringify(jsonLtdLng));
        //alert($.getJSON(jsonLtdLng));
        //alert($.getJSON(jsonLtdLng.lat));
        //alert($.getJSON(jsonLtdLng.results.geometry.location.lat));
        //alert($.getJSON(jsonLtdLng.results[0].geometry.location.lat));
        //alert($.getJSON(jsonLtdLng.results[0].geometry.location.lat()));
        alert(jsonLtdLng.results[0].geometry.location.lat());
    });
});

Attempting to WORKLIGHT Testing.

Unable to extract the latitude and longitude.

alert(JSON.stringify(jsonLtdLng));//shows complete address

alert($.getJSON(jsonLtdLng));//displays object Object

alert($.getJSON(jsonLtdLng.lat));//no output

alert($.getJSON(jsonLtdLng.results.geometry.location.lat));//no output

alert($.getJSON(jsonLtdLng.results[0].geometry.location.lat));//no output

alert($.getJSON(jsonLtdLng.results[0].geometry.location.lat()));//no output

alert(jsonLtdLng.results[0].geometry.location.lat());//no output

javascript json google-maps google-maps-api-3

Answer 1

Answer №1

Your attempt to use $.getJSON did not produce the expected results

Consider trying this code instead:

$.getJSON(jsonLtdLng, function (data) {
  console.log(data.results[0].geometry.location.lat);
});

Answer 2

Your attempt to use $.getJSON did not produce the expected results

Consider trying this code instead:

$.getJSON(jsonLtdLng, function (data) {
  console.log(data.results[0].geometry.location.lat);
});

Answer 3

Answer №2

When working with JSON data in JavaScript, you have a few options for deserializing the information. One common method is using JSON.parse() to convert the JSON data into an object that JavaScript can work with. In the past, eval() was used for this purpose, but deserializing using JSON.parse() is now more widely accepted.

To see the JSON data in a readable format, you can use document.write(), but keep in mind that you will need to deserialize it first using JSON.parse(). On the other hand, JSON.stringify() is used for serializing data before transmitting it. The recipient would then need to deserialize it using JSON.parse() to work with it in JavaScript.

While write.document() can be useful for viewing information, using console.log() allows for easier inspection of object contents. Here's an example of how to work with JSON data:

// Assume apiData contains the JSON data from an API
var externalData = JSON.parse(apiData);

// Output will be [object object]
document.write(externalData);

// Output will be blank
document.write('      ');

// Output will display latitude value
document.write(externalData.results[0].geometry.location.lat);

// Use console.log() to view data in the console
console.log(externalData);

Hopefully, this explanation clarifies the process of deserializing JSON data and working with it in JavaScript.

Answer 4

When working with JSON data in JavaScript, you have a few options for deserializing the information. One common method is using JSON.parse() to convert the JSON data into an object that JavaScript can work with. In the past, eval() was used for this purpose, but deserializing using JSON.parse() is now more widely accepted.

To see the JSON data in a readable format, you can use document.write(), but keep in mind that you will need to deserialize it first using JSON.parse(). On the other hand, JSON.stringify() is used for serializing data before transmitting it. The recipient would then need to deserialize it using JSON.parse() to work with it in JavaScript.

While write.document() can be useful for viewing information, using console.log() allows for easier inspection of object contents. Here's an example of how to work with JSON data:

// Assume apiData contains the JSON data from an API
var externalData = JSON.parse(apiData);

// Output will be [object object]
document.write(externalData);

// Output will be blank
document.write('      ');

// Output will display latitude value
document.write(externalData.results[0].geometry.location.lat);

// Use console.log() to view data in the console
console.log(externalData);

Hopefully, this explanation clarifies the process of deserializing JSON data and working with it in JavaScript.

Guide on extracting latitude and longitude geocode from a JSON response using the Google Maps API and storing them in variables with JavaScript

Answer №1

Answer №2

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