cookie.js

var Cookie = {
  findAll: function() {
    var cookies = {};
    _(document.cookie.split(';'))
      .chain()
      .map(function(m) {
          return m.replace(/^\s+/, '').replace(/\s+$/, '');
      })
      .each(function(c) {
        var arr = c.split('='),
            key = arr[0],
            value = null;
        var size = _.size(arr);
        if (size > 1) {
            value = arr.slice(1).join('');
        }
        cookies[key] = value;
      });
    return cookies;
  },
  
  find: function(name) {
    var cookie = null,
      list = this.findAll();

    _.each(list, function(value, key) {
      if (key === name){
        cookie = value;
      }
    });
    return cookie;
  },

  create: function(name, value, time) {
    var today = new Date(),
      offset = (typeof time === 'undefined') ? (1000 * 60 * 60 * 24) : (time * 1000),
      expires_at = new Date(today.getTime() + offset);

    var cookie = _.map({
        name: encodeURIComponent(value),
        expires: expires_at.toGMTString(),
        path: '/'
      }, function(value, key) {
        return [(key === 'name') ? name : key, value].join('=');
      }).join(';');
        
    document.cookie = cookie;
    return this;
  },

  destroy: function(name, cookie) {
    if (cookie = this.find(name)) {
      this.create(name, null, -1000000);
    }
    return this;
  }
};