localStorage二次封装-----设置过期时间

Posted 2022-09-26 wuqilang

        export default
            set(key,data,time)
                let obj=
                    data=data,
                    ctime:(new Date()).getTime(),//时间戳，同Date.now()
                    express:1000*60*60//设置过期时间一个小时
                
                localStorage.setItem(key,JSON.stringify(obj));
            ,
            get(key)
                let obj=JSON.parse(localStorage.getItem(key));
                let getItem=(new Date()).getTime();
                if(getItem-obj.ctime>=express)
                    localStorage.removeItem(key);
                    return null;
                else
                    return obj.data;