JS日期时间格式化的方法

Date.prototype.format = function (format) {
        /*
        * eg:format="YYYY-MM-dd hh:mm:ss";
        */
        var o = {
            "M+": this.getMonth() + 1,  //month
            "d+": this.getDate(),     //day
            "h+": this.getHours(),    //hour
            "m+": this.getMinutes(),  //minute
            "s+": this.getSeconds(), //second
            "q+": Math.floor((this.getMonth() + 3) / 3),  //quarter
            "S": this.getMilliseconds() //millisecond
        };

        if (/(y+)/.test(format)) {
            format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
        }

        for (var k in o) {
            if (new RegExp("(" + k + ")").test(format)) {
                format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
            }
        }
        return format;
    };

使用：

(new Date()).format("yyyy-MM-dd hh:mm:ss")