【www.bbyears.com--Access】
例子
代码如下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;
}
//上面的函数必须在上面(先定义后使用),不然无法识别format()
var ddd = new Date();
alert(ddd.format("yyyyMMdd"));
看个例子 Date.Format
代码如下// 对Date的扩展，将 Date 转化为指定格式的String
// 月(M)、日(d)、小时(h)、分(m)、秒(s)、季度(q) 可以用 1-2 个占位符，
// 年(y)可以用 1-4 个占位符，毫秒(S)只能用 1 个占位符(是 1-3 位的数字)
// 例子：
// (new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423
// (new Date()).Format("yyyy-M-d h:m:s.S") ==> 2006-7-2 8:9:4.18
Date.prototype.Format = function (fmt) { //author: meizz
var o = {
"M+": this.getMonth() + 1, //月份
"d+": this.getDate(), //日
"h+": this.getHours(), //小时
"m+": this.getMinutes(), //分
"s+": this.getSeconds(), //秒
"q+": Math.floor((this.getMonth() + 3) / 3), //季度
"S": this.getMilliseconds() //毫秒
};
if (/(y+)/.test(fmt))
fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt))
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
}
例子 Date.prototype.format
代码如下Date.prototype.format = function (mask)
{
var d = this;
var zeroize = function (value, length)
{
if (!length) length = 2;
value = String(value);
for (var i = 0, zeros = ""; i < (length - value.length); i++)
{
zeros += "0";
}
return zeros + value;
};
return mask.replace(/"[^"]*"|"[^"]*"|＼b(?:d{1,4}|m{1,4}|yy(?:yy)?|([hHMstT])＼1?|[lLZ])＼b/g, function ($0)
{
switch ($0)
{
case "d": return d.getDate();
case "dd": return zeroize(d.getDate());
case "ddd": return ["Sun", "Mon", "Tue", "Wed", "Thr", "Fri", "Sat"][d.getDay()];
case "dddd": return ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"][d.getDay()];
case "M": return d.getMonth() + 1;
case "MM": return zeroize(d.getMonth() + 1);
case "MMM": return ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"][d.getMonth()];
case "MMMM": return ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][d.getMonth()];
case "yy": return String(d.getFullYear()).substr(2);
case "yyyy": return d.getFullYear();
case "h": return d.getHours() % 12 || 12;
case "hh": return zeroize(d.getHours() % 12 || 12);
case "H": return d.getHours();
case "HH": return zeroize(d.getHours());
case "m": return d.getMinutes();
case "mm": return zeroize(d.getMinutes());
case "s": return d.getSeconds();
case "ss": return zeroize(d.getSeconds());
case "l": return zeroize(d.getMilliseconds(), 3);
case "L": var m = d.getMilliseconds();
if (m > 99) m = Math.round(m / 10);
return zeroize(m);
case "tt": return d.getHours() < 12 ? "am" : "pm";
case "TT": return d.getHours() < 12 ? "AM" : "PM";
case "Z": return d.toUTCString().match(/[A-Z]+$/);
// Return quoted strings with the surrounding quotes removed
default: return $0.substr(1, $0.length - 2);
}
});
};