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webdb.js

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var webdb = { };

webdb._db = null;

webdb.check = function () {

var ls = window.localStorage;

if (!ls) {

alert('local storage unavailable :(');

}

};

webdb.add = function (url, json) {

var ls = window.localStorage;

if (ls) {

try {

ls.setItem(url, json);

} catch (e) {

alert(e);

}

}

};

webdb.get = function (url) {

var ls = window.localStorage;

return ls ? ls.getItem(url) : null;

};

webdb.clear = function () {

var ls = window.localStorage;

if (ls) {

ls.clear();

}

};