JavaScript: localStorage - cookies replacement

gistfile1.js

// thin wrapper around local-storage to avoid
// errors if the browser does not support it.
var globalVar.localStorage = {
    set: function(key, value) {
        if (!swarm.localStorage.canStore()) {
            return null;
        }

        return window.localStorage.setItem(key, value);
    },

    get: function(key) {
        if (!swarm.localStorage.canStore()) {
            return null;
        }

        return window.localStorage.getItem(key);
    },

    canStore: function() {
        try {
            return window.localStorage !== undefined && window.localStorage !== null;
        } catch (e) {
            return false;
        }
    }
};