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@eek
Last active August 9, 2017 10:59
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localStorage Pollyfill for Safari / Chrome Private / Incognito Mode & Others
try {
localStorage.setItem('test', true);
} catch (e) {
if (e.code == 22) { //localStorage exists but size limit -> Probably Safari Private Mode.
localStorage.__proto__ = Object.create(Storage.prototype);
localStorage.__proto__._data = {};
localStorage.__proto__.setItem = function (id, val) {
return this._data[id] = String(val)
};
localStorage.__proto__.getItem = function (id) {
return this._data.hasOwnProperty(id) ? this._data[id] : undefined
};
localStorage.__proto__.removeItem = function (id) {
return delete this._data[id]
};
localStorage.__proto__.clear = function () {
return this._data = {}
};
}
} finally {
localStorage.removeItem('test');
}
@legraphista
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You should also add

try{<...>}
catch(e){<...>}
finally {
   localStorage.removeItem('test');
}

to clean the test item

@eek
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Author

eek commented Jun 26, 2016

Added, thanks! :)

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