localStorage 设置过期时间

/****
* name:localStorage的key
* data:localStorage的Value
* expire:localStorage的过期时间,默认是1天后过期
****/
//设置缓存
const localStorageSet = (name, data, expire = new Date().getTime() + expire * 60 * 60 * 1000) =>{
  const obj ={
    data,
    expire
  };
  localStorage.setItem(name, JSON.stringify(obj));
};
//读取缓存
const localStorageGet = name =>{
  const storage =localStorage.getItem(name);
  const time = newDate().getTime();
  let result ={};
  if(storage) {
    const obj =JSON.parse(storage);
    if (time <obj.expire) {
      result =obj.data;
    } else{
      localStorage.removeItem(name);
    }
  }
  returnresult;
};

let expire = new Date(new Date().setDate(new Date().getDate() + 1)).setHours(0, 0, 0, 0);
localStorageSet('popup', {
    showOnce: true,
}, expire);