node.js 日期格式化

function fix2number(n) {
return [0,n].join('').slice(-2);
}
function getTime(format) {
var curDate = new Date();
if (format == undefined) return curDate;
format = format.replace(/Y/i, curdate.getFullYear());
format = format.replace(/m/i, fix2number(curdate.getMonth() + 1));
format = format.replace(/d/i, fix2number(curdate.getDate()));
format = format.replace(/H/i, fix2number(curdate.getHours()));
format = format.replace(/i/i, fix2number(curdate.getMinutes()));
format = format.replace(/s/i, fix2number(curdate.getSeconds()));
format = format.replace(/ms/i, curdate.getMilliseconds());
return format;
}