How to retrive property values from array of objects in javascript

Question

[{ "circlemarker": [{ "type": "circle_marker" }, { "latlong": "abc" }] }, { "connector_marker": [{ "type": "icon_marker" }, { "latlong": "pqr" }] }, { "icon_marker": [{ "type": "connector_marker" }, { "latlong": "xyz" }] }] 

I want to access latlong values of each marker. So how can I have access to each property in this structure.

Answer 1

You can get latlong data:

for (var a = 0; a < obj.length; a++) { var key = Object.keys(obj[a])[0]; var latlong = obj[a][key][1]; console.log(latlong)); } 

But i think that data have not correct structure, this is better solution:

var markers = [{ "name": "circlemarker", "type": "circle_marker" "latlong": "abc" }, { "name": "connector_marker", "type": "icon_marker", "latlong": "pqr" }, { "name": "icon_marker", "type": "connector_marker", "latlong": "xyz" }]; 

Answer 2

I think this should work for you:-

var makers = [{"circlemarker":[{"type":"circle_marker"},{"latlong":"abc"}]},{"connector_marker":[{"type":"icon_marker"},{"latlong":"pqr"}]},{"icon_marker":[{"type":"connector_marker"},{"latlong":"xyz"}]}]; makers.forEach(function(maker){ var makerName = Object.keys(maker)[0]; console.log(maker[makerName][1]["latlong"]); }); 

Answer 3

so for each object in the array, you want to pluck the latlong from the first key which also references another array of objects. Man I would fix this data structure but if you can't control it, you can do this:

#!/usr/bin/env node var data = [{ "circlemarker": [{ "type": "circle_marker" }, { "latlong": "abc" }] }, { "connector_marker": [{ "type": "icon_marker" }, { "latlong": "pqr" }] }, { "icon_marker": [{ "type": "connector_marker" }, { "latlong": "xyz" }] }]; var _ = require('lodash') , coords = []; _.each(data, function(item){ //console.log(item); var key = _(Object.keys(item)).first() , first = item[key] , latLong = _.pluck(first, 'latlong')[1]; if ( latLong ) { coords.push(latLong); } }); console.log(coords); 

Produces the following output:

[ 'abc', 'pqr', 'xyz' ]