Javascipt 时间格式化（日期）

Date.prototype.format =function(format){
    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
    };
    var week = {         
        "0" : "\u65e5",         
        "1" : "\u4e00",         
        "2" : "\u4e8c",         
        "3" : "\u4e09",         
        "4" : "\u56db",         
        "5" : "\u4e94",         
        "6" : "\u516d"
     };
     if(/(y+)/.test(format)) format=format.replace(RegExp.$1,(this.getFullYear()+"").substr(4- RegExp.$1.length));
     if(/(E+)/.test(format)) format=format.replace(RegExp.$1, ((RegExp.$1.length>1) ? (RegExp.$1.length>2 ? "\u661f\u671f" : "\u5468") : "")+week[this.getDay()+""]);         
     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;
};

console.log(new Date().format("yyyy-MM-dd EEEE HH:mm"));