https://www.flirtenindebuurt.com/js/storage.js

1(function($) {
2
3    function WebStorageAdapter()
4    {
5        if (typeof localStorage === 'undefined') {
6            throw new TypeError('Missing localStorage object');
7        }
8
9        if (typeof sessionStorage === 'undefined') {
10            //throw new TypeError('Missing sessionStorage object');
11        }
12    }
13
14    function createKey(namespace, key) {
15        return namespace + '::' + key;
16    };
17
18    function localKeyExists(fullKey) {
19        if (typeof localStorage === 'undefined') {
20            return false;
21        }
22        return (localStorage[fullKey] !== undefined);
23    };
24
25    function sessionKeyExists(fullKey) {
26        if (typeof sessionStorage === 'undefined') {
27            return false;
28        }
29        return (sessionStorage[fullKey] !== undefined);
30    };
31
32    WebStorageAdapter.prototype.get = function(namespace, key)
33    {
34        var fullKey     = createKey(namespace, key),
35            result      = null,
36            data        = null,
37            now         = new Date().getTime(),
38            ignoreParse = false;

39
40        if (sessionKeyExists(fullKey)) {
41            result = sessionStorage[fullKey];
42        } else if (localKeyExists(fullKey)){
43            result = localStorage[fullKey];
44        } else {
45            data   = $.cookies.get(fullKey);
46            ignoreParse = true;
47        }
48
49        if (false === ignoreParse) {
50            if (result === null || result === 'null') {
51                return null;
52            }
53            try {
54                data = JSON.parse(result);
55            } catch (e) {
56                this.del(namespace, key);
57                return null;
58            }
59        }
60
61        if (null === data) {
62            return null;
63        }
64
65        if (data.ttl === 0) {
66            return data.data;
67        }
68
69        if ((data.created + data.ttl) < now) {
70            this.del(namespace, key);
71
72            return null;
73        }
74
75        return data.data;
76    };
77
78    WebStorageAdapter.prototype.set = function(namespace, key, value, session, ttl)
79    {
80        var expiresAt   = new Date(),
81            domainParts = window.location.host.split('.'),
82            fullKey     = createKey(namespace, key),
83            data        = {
84                created : new Date().getTime(),
85                data    : value,
86                ttl     : ttl !== undefined ? (ttl * 1000) : 86400000
87            },
88            cookieOptions;
89
90        expiresAt.setTime(
91            expiresAt.getTime() + (ttl !== undefined ? (ttl * 1000) : 86400000)
92        );
93        delete domainParts[0];
94
95        cookieOptions = {
96            domain    : domainParts.join('.'),
97            path      : '/',
98            expiresAt : (session ? 'Session' : expiresAt)
99        };
100
101        try {
102            if (session && typeof sessionStorage !== 'undefined') {
103                sessionStorage[fullKey] = JSON.stringify(data);
104            } else if (!session && typeof localStorage !== 'undefined') {
105                localStorage[fullKey] = JSON.stringify(data);
106            }
107        } catch (err) {
108            // ON error fallback to cookie if available...
109            if (typeof $.cookies !== 'undefined') {
110                $.cookies.set(fullKey, data, cookieOptions);
111            }
112        }
113
114        return true;
115    };
116
117    WebStorageAdapter.prototype.del = function(namespace, key)
118    {
119        var fullKey = createKey(namespace, key),
120            cleared = false;
121
122        if (sessionKeyExists(fullKey)) {
123            try {
124                delete(sessionStorage[fullKey]);
125            } catch (err) {
126                sessionStorage[fullKey] = null;
127            }
128            cleared = true;
129        }
130
131        if (localKeyExists(fullKey)) {
132            try {
133                delete(localStorage[fullKey]);
134            } catch (err) {
135                localStorage[fullKey] = null;
136            }
137            cleared = true;
138        }
139
140        if (false === cleared) {
141            $.cookies.del(fullKey);
142            cleared = true;
143        }
144
145        return cleared;
146    };
147
148    WebStorageAdapter.prototype.clear = function(namespace)
149    {
150        var match = new RegExp('^' + namespace + '::'),
151            i     = null,
152            item  = null;
153
154        for (i = 0; i < localStorage.length; i++) {
155            item = localStorage[i];
156            if (typeof item !== 'undefined' && item.match(match)) {
157                try {
158                    delete(localStorage[i]);
159                } catch (err) {
160                    localStorage[i] = null;
161                }
162            }
163        }
164
165        if (typeof sessionStorage === 'undefined') {
166            return true;
167        }
168
169        for (i = 0; i < sessionStorage.length; i++) {
170            item = sessionStorage[i];
171            if (typeof item !== 'undefined' && item.match(match)) {
172                try {
173                    delete(sessionStorage[i]);
174                } catch (err) {
175                    sessionStorage[i] = null;
176                }
177            }
178        }
179
180        return true;
181    };
182
183    if (typeof window === 'object' && typeof window.document === 'object' && typeof window.storage === 'undefined') {
184      window.storage = new WebStorageAdapter();
185    }
186
187}(jQuery));