LocalStorage wrapper

example.js

Ls.remove('foo').then(function () {
  Ls.set('foo', 'bar');
});

console.log( Ls.get('foo') )

ls.js

var Ls = {
  cb: '',

  get: function (key) {
    return localStorage.getItem(key);
  },

  set: function (key, val) {
    localStorage.setItem(key, val);
    return this;
  },

  remove: function (key) {
    localStorage.removeItem(key);
    return this;
  },

  then: function(cb) {
    cb();
    return this;
  }
}