SOURCE

/**
     * 为Date[日期]增加日期格式转换功能
     * @param  {string}   mask    日期格式
     * @return {string}   返回mask格式的日期
     */
    Date.prototype.format = function(mask) {
        var d = this;
        //补零操作
        var zeroize = function(value, length) {
            length || (length = 2);
            value = String(value);
            for (var i = 0, zeros = ""; i < length - value.length; i++) {
                zeros += "0";
            }
            return zeros + value;
        };
        return mask.replace(/"[^"]*"|'[^']*'|\b(?:d{1,4}|m{1,4}|yy(?:yy)?|([hHMstT])\1?|[lLZ])\b/g, function($0) {
            switch ($0) {
                case "dd":
                    return zeroize(d.getDate());
                case "MM":
                    return zeroize(d.getMonth() + 1);
                case "yy":
                    return String(d.getFullYear()).substr(2);
                case "yyyy":
                    return d.getFullYear();
                case "hh":
                    return zeroize(d.getHours() % 12 || 12);
                case "HH":
                    return zeroize(d.getHours());
                case "m":
                    return d.getMinutes();
                case "mm":
                    return zeroize(d.getMinutes());
                case "ss":
                    return zeroize(d.getSeconds());
                case "tt":
                    return d.getHours() < 12 ? "am" : "pm";
                case "TT":
                    return d.getHours() < 12 ? "AM" : "PM";
                case "Z":
                    return d.toUTCString().match(/[A-Z]+$/);
                default:
                    return $0.substr(1, $0.length - 2);
            }
        });
    };
console.log(new Date().format("yyyy-MM-dd-hh-mm-ss TT Z"))