js封装，时间戳转换任意格式时间

/**
 * 时间戳转换为日期时间
 * @param timestamp: 传入时间戳，需为10位字符串或13位字符串
 * @param format: 日期格式，参数需为Y M D h m s ,格式自定义(如'Y-M-D h:m:s')
 * */
var timestampToTime = function (timestamp ,format) {
    var format_Arr = ['Y', 'M', 'D', 'h', 'm', 's'];

    timestamp = timestamp.toString().length === 13 ? Number(timestamp) : timestamp*1000;
    var data = new Date(timestamp);
    var Y = zerofill(data.getFullYear()),
        M = zerofill(data.getMonth()+1),
        D = zerofill(data.getDate()),
        h = zerofill(data.getHours()),
        m = zerofill(data.getMinutes()),
        s = zerofill(data.getMilliseconds());

    var time_Arr = [Y, M, D, h, m, s];

    time_Arr.forEach(function (value, index) {
        format = format.replace(format_Arr[index], value);
    });

    return format;

    function zerofill (time) {
        var tiem_str = time.toString();
        return tiem_str[1] ? tiem_str : '0' + tiem_str;
    }
};

参考文献：www.jianshu.com/p/5d380b68c…