时间转换成日期时间格式

最近学习到两种时间转换成日期时间格式,总结如下:
1.
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
}
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;
}

之后就可以利用format方法来确定自己需要的日期时间格式,如:
var mydate=new Date().format('yyyy年mm月dd日 hh:mm:ss');

2.
 dateDigitToString = function (num) {
return num < 10 ? '0' + num : num;
var currentDate = new Date(),
year = dateDigitToString(currentDate.getFullYear()),
month = dateDigitToString(currentDate.getMonth() + 1),
date = dateDigitToString(currentDate.getDate()),
hour = dateDigitToString(currentDate.getHours()),
minute = dateDigitToString(currentDate.getMinutes()),
second = dateDigitToString(currentDate.getSeconds()),
formattedDateString = year + '年' + month + '月' + date + '日 ' + hour + ':' + minute + ':' + second;

这种方式只能定义一种时间日期格式,相对没有第一种运用广泛

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