日期格式化和数字价格化

方式一： 
formateNumber(num) {
        if ((num + "").trim() == "") {
            return "";
        }
        if (isNaN(num)) {
            return num;
        }
        num = num + "";
        if (/^.*..*$/.test(num)) {
            var pointIndex = num.lastIndexOf(".");
            var intPart = num.substring(0, pointIndex);
            var pointPart = num.substring(pointIndex + 1, num.length);
            intPart = intPart + "";
            var re = /(-?d+)(d{3})/
            while (re.test(intPart)) {
                intPart = intPart.replace(re, "$1,$2")
            }
            num = intPart + "." + pointPart;
        } else {
            num = num + "";
            var re = /(-?d+)(d{3})/
            while (re.test(num)) {
                num = num.replace(re, "$1,$2")
            }
        }
        return num;
    },
方式二：

location.hostname.replace(/.*?([^.]+.(com|cn))/, "$1"); //www.baidu.com => baidu.com
return (num || 0).toString().replace(/(d)(?=(?:d{3})+$)/g, '$1,') //数字三个三个逗号分隔

日期格式:
    formateDate(value,mask) {
        var d = new Date(Date.parse(value));
        var regular=mask||"yyyy-MM-dd";
        var zeroize = function (value, length)
        {
            if (!length) length = 2;
            value = String(value);
            for (var i = 0, zeros = ''; i < (length - value.length); i++)
            {
                zeros += '0';
            }
            return zeros + value;
        };

        return regular.replace(/"[^"]*"|'[^']*'|(?:d{1,4}|m{1,4}|yy(?:yy)?|([hHMstT])1?|[lLZ])/g, function ($0)
        {
            switch ($0)
            {
                case 'd': return d.getDate();
                case 'dd': return zeroize(d.getDate());
                case 'ddd': return ['Sun', 'Mon', 'Tue', 'Wed', 'Thr', 'Fri', 'Sat'][d.getDay()];
                case 'dddd': return ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'][d.getDay()];
                case 'M': return d.getMonth() + 1;
                case 'MM': return zeroize(d.getMonth() + 1);
                case 'MMM': return ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][d.getMonth()];
                case 'MMMM': return ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'][d.getMonth()];
                case 'yy': return String(d.getFullYear()).substr(2);
                case 'yyyy': return d.getFullYear();
                case 'h': return d.getHours() % 12 || 12;
                case 'hh': return zeroize(d.getHours() % 12 || 12);
                case 'H': return d.getHours();
                case 'HH': return zeroize(d.getHours());
                case 'm': return d.getMinutes();
                case 'mm': return zeroize(d.getMinutes());
                case 's': return d.getSeconds();
                case 'ss': return zeroize(d.getSeconds());
                case 'l': return zeroize(d.getMilliseconds(), 3);
                case 'L': var m = d.getMilliseconds();
                    if (m > 99) m = Math.round(m / 10);
                    return zeroize(m);
                case 'tt': return d.getHours() < 12 ? 'am' : 'pm';
                case 'TT': return d.getHours() < 12 ? 'AM' : 'PM';
                case 'Z': return d.toUTCString().match(/[A-Z]+$/);
                // Return quoted strings with the surrounding quotes removed
                default: return $0.substr(1, $0.length - 2);
            }
        });  
    }