localstroge hotfix by sofish

js in brower

// 解决隐私模式下 localStorage 不正常问题
;(function() {
  var KEY = '_localStorage_'
    , VALUE = 'test';
  
  // 检测是否正常
  try {
    localStorage.setItem(KEY, VALUE);
  } catch(e) {
    var noop = function() {};

    localStorage.__proto__ = {
      setItem: noop,
      getItem: noop,
      removeItem: noop,
      clear: noop
    };
  }

  // 删除测试数据
  if(localStorage.getItem(KEY) === VALUE) localStorage.removeItem(KEY);
})();