Jquery时间对象的格式化

/**
* 时间对象的格式化;
*/
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 kin 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;
}