js时间戳转为日期函数

 ???function add0(m){ ???????return m<10?‘0‘+m:m; ???}
 ???//timestamp参数示例：1501234567 ???function format(timestamp){ ???????//timestamp是整数，否则要parseInt转换,不会出现少个0的情况 ???????var time = new Date(timestamp*1000); //Date构造函数需要传的时间戳要精确到毫秒，所以乘以1000 ???????var year = time.getFullYear(); ???????var month = time.getMonth()+1; ???????var date = time.getDate(); ???????var hours = time.getHours(); ???????var minutes = time.getMinutes(); ???????var seconds = time.getSeconds(); ???????return year+‘-‘+add0(month)+‘-‘+add0(date)+‘ ‘+add0(hours)+‘:‘+add0(minutes)+‘:‘+add0(seconds); ???}