https://www.cinemacity.bg/xmedia/js/methods/object-methods.js

1/**
2 * Created by t.stulka on 2017-02-03.
3 */
4
5
6var objectHelper = {
7    getObjectsByKey: function(obj, key, val) {
8        if(typeof obj !== 'undefined') {
9            var objects = [];
10            for (var i in obj) {
11                if (!obj.hasOwnProperty(i)) continue;
12                if (typeof obj[i] === 'object') {
13                    objects = objects.concat(objectHelper.getObjectsByKey(obj[i], key, val));
14                } else
15                //if key matches and value matches or if key matches and value is not passed (eliminating the case where key matches but passed value does not)
16                if (i == key && obj[i] == val || i == key && val === '') { //
17                    objects.push(obj);
18                } else if (obj[i] == val && key === '') {
19                    //only add if the object is not already in the array
20                    if (objects.lastIndexOf(obj) == -1) {
21                        objects.push(obj);
22                    }
23                }
24            }
25            return objects;
26        } else {
27            return null;
28        }
29    },
30    getValuesByKey: function(obj, key) {
31        if(typeof obj !== 'undefined') {
32            var objects = [];
33            for (var i in obj) {
34                if (!obj.hasOwnProperty(i)) continue;
35                if (typeof obj[i] === 'object') {
36                    objects = objects.concat(objectHelper.getValuesByKey(obj[i], key));
37                } else if (i == key) {
38                    objects.push(obj[i]);
39                }
40            }
41            return objects;
42        } else {
43            return null;
44        }
45    }
46};