Fix for sammy.store.js

sammy.store.js

  Sammy.Store = function(options) {
    var store = this;
    this.options  = options || {};
    this.name     = this.options.name || 'store';
    this.element  = this.options.element || 'body';
    //this.$element = $(this.element); // <== *** Don't redefine $element here... do it below...
    if ($.isArray(this.options.type)) {
      $.each(this.options.type, function(i, type) {
        if (Sammy.Store.isAvailable(type)) {
          store.type = type;
          return false;
        }
      });
    } else {
      this.type = this.options.type || 'memory';
    }
    this.meta_key = this.options.meta_key || '__keys__';
    this.storage  = new Sammy.Store[Sammy.Store.stores[this.type]](this.name, this.element, this.options);
  };

  Sammy.Store.stores = {
    'memory': 'Memory',
    'data': 'Data',
    'local': 'LocalStorage',
    'session': 'SessionStorage',
    'cookie': 'Cookie'
  };

  $.extend(Sammy.Store.prototype, {
    // Checks for the availability of the current storage type in the current browser/config.
    isAvailable: function() {
      if ($.isFunction(this.storage.isAvailable)) {
        return this.storage.isAvailable();
      } else {
        true;
      }
    },
    // Checks for the existance of `key` in the current store. Returns a boolean.
    exists: function(key) {
      return this.storage.exists(key);
    },
    // Sets the value of `key` with `value`. If `value` is an
    // object, it is turned to and stored as a string with `JSON.stringify`.
    // It also tries to conform to the KVO pattern triggering jQuery events on the
    // element that the store is bound to.
    //
    // ### Example
    //
    //      var store = new Sammy.Store({name: 'kvo'});
    //      $('body').bind('set-kvo-foo', function(e, data) {
    //        Sammy.log(data.key + ' changed to ' + data.value);
    //      });
    //      store.set('foo', 'bar'); // logged: foo changed to bar
    //
    set: function(key, value) {
      var string_value = (typeof value == 'string') ? value : JSON.stringify(value);
      key = key.toString();
      this.storage.set(key, string_value);
      if (key != this.meta_key) {
        this._addKey(key);
        this.$element = $(this.element); // <== *** Redefine $element here so trigger below will work
        this.$element.trigger('set-' + this.name, {key: key, value: value});
        this.$element.trigger('set-' + this.name + '-' + key, {key: key, value: value});
      };
      // always return the original value
      return value;
    },