JS将时间戳转化为时间

//将时间戳转化为时间
function timestampToTime(timestamp) {
     var date = new Date(timestamp * 1000);//时间戳为10位需*1000，13位的话不需要
     Y = date.getFullYear() + "-";
     M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '-';
     D = date.getDate() + " ";
     H = date.getHours() + ":";
     MIN = date.getMinutes() + ":";
     S = date.getSeconds();
     return Y+M+D+H+MIN+S;
}