function buildDate({year,month,day,hour,minute,second}){
	return new Date(year+'-'+month+'-'+day+' '+hour+':'+minute+':'+second);
}
var time = {};
time.year = 2018;
time.month = 1;
time.day = 1;
time.hour = 23;
time.minute = 45;
time.second = 18;
console.log(buildDate(time));//Mon Jan 01 2018 23:45:18 GMT+0800 (中国标准时间)