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;
}