JavaScript 日期转化

怎么将这种类型
Mon Sep 15 00:00:00 CEST 2008
的日期转化为
2008-10-15

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没人会吗？

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JScript code:
function formatDate(D)
{//调整时间显示格式2007-01-01 12:00:00
return D.getFullYear() + "-" + (D.getMonth() + 1) + "-" + D.getDate() + " " + D.getHours() + ":" + D.getMinutes() + ":" + D.getSeconds();
}
alert("转化前：" + new Date());
alert("转化后：" + formatDate(new Date()));

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JScript code:

if(!Date.prototype.format){//日期格式化
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)