https://www.norafleur.nl/js/user.location.js

1var UserLocation = {
2
3    // Set variables
4    locationType: '',           // Set available location type: [ by-browser | by-server ]
5    coords: '',           // Stored coords will be here
6
7    // Setup
8    accuracy: 5,            // This will be added to the database to prevent knowing the EXACT location.
9    timeout: 5000,         // Timeout for getting current position
10    maximumAge: 0,            // Maximum age of the position
11    enableHighAccuracy: true,         // Set whether to retrieve a more accurate location of the browser
12
13    // Initial boot function
14    init: function () {
15
16        // Determine location type
17        UserLocation.testBrowser();
18
19        // Fetch location on init
20        UserLocation.fetchLocation();
21
22    },
23
24    /*
25     * Store coords and eventually modify them
26     */
27    setCoords: function (coords) {
28
29        UserLocation.coords = coords;
30
31    },
32
33    /*
34     * Get stored coords
35     */
36    getCoords: function () {
37
38        return UserLocation.coords;
39
40    },
41
42    // Test browser for location functionality
43    testBrowser: function () {
44
45        // If browser hasn't been tested yet
46        if (UserLocation.locationType === '') {
47
48            // Check for geolocation options
49            if (navigator.geolocation) {
50
51                UserLocation.locationType = 'by-browser';
52
53            } else {
54
55                UserLocation.locationType = 'by-server';
56
57            }
58
59        }
60
61    },
62
63    fetchLocation: function () {
64
65        if (UserLocation.locationType == 'by-browser') {
66
67            // Retrieve by GPS location
68            UserLocation.askClientForLocation();
69
70        } else if (UserLocation.locationType == 'by-server') {
71
72            // Not implemented yet.
73
74        }
75
76    },
77
78    askClientForLocation: function () {
79
80        navigator.geolocation.getCurrentPosition(UserLocation.storeLocation, UserLocation.errorLocation, {
81            timeout: UserLocation.timeout,
82            maximumAge: UserLocation.maximumAge,
83            enableHighAccuracy: UserLocation.enableHighAccuracy
84        });
85
86    },
87
88    storeLocation: function (position) {
89
90        UserLocation.setCoords(position.coords);

91
92        UserLocation.getCoords();
93
94        $.post(
95            '/',
96            {
97                jsonData: UserLocation.prepareData(UserLocation.getCoords())
98            }
99        );
100
101    },
102
103    // Prepare data to post to server
104    prepareData: function (data) {
105
106        var postData = {
107
108            lat: data.latitude,
109            lon: data.longitude,
110            securityToken: securityToken
111
112        }
113
114        return JSON.stringify(postData);
115
116    },
117
118    errorLocation: function (error) {
119
120        // Warning to console
121        console.warn('ERROR ' + error.code + ': ' + error.message);
122
123        /*
124         // Fallback for location type
125         UserLocation.locationType = 'by-server';
126
127         // Fetch location again but by server now
128         UserLocation.fetchLocation();
129         */
130
131    }
132
133}
134
135$(function () {
136
137    UserLocation.init();
138
139});