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锁定老帖子 主题：JavaScript日期格式化
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发表时间：2010-03-17
最后修改：2010-03-23
DateFormat = (function(){
var SIGN_REGEXP = /([yMdhsm])(\1*)/g;
var DEFAULT_PATTERN = 'yyyy-MM-dd';
function padding(s,len){
var len =len - (s+'').length;
for(var i=0;i<len;i++){s = '0'+ s;}
return s;
};
return({
format: function(date,pattern){
pattern = pattern||DEFAULT_PATTERN;
return pattern.replace(SIGN_REGEXP,function($0){
switch($0.charAt(0)){
case 'y' : return padding(date.getFullYear(),$0.length);
case 'M' : return padding(date.getMonth()+1,$0.length);
case 'd' : return padding(date.getDate(),$0.length);
case 'w' : return date.getDay()+1;
case 'h' : return padding(date.getHours(),$0.length);
case 'm' : return padding(date.getMinutes(),$0.length);
case 's' : return padding(date.getSeconds(),$0.length);
}
});
},
parse: function(dateString,pattern){
var matchs1=pattern.match(SIGN_REGEXP);
var matchs2=dateString.match(/(\d)+/g);
if(matchs1.length==matchs2.length){
var _date = new Date(1970,0,1);
for(var i=0;i<matchs1.length;i++){
var _int = parseInt(matchs2[i]);
var sign = matchs1[i];
switch(sign.charAt(0)){
case 'y' : _date.setFullYear(_int);break;
case 'M' : _date.setMonth(_int-1);break;
case 'd' : _date.setDate(_int);break;
case 'h' : _date.setHours(_int);break;
case 'm' : _date.setMinutes(_int);break;
case 's' : _date.setSeconds(_int);break;
}
}
return _date;
}
return null;
}
});
})();
//将一个 Date 格式化为日期/时间字符串。
备注：parse方法处理的有点不好，还有点问题。 类似yyyyMMdd之类没有分割的格式无法解析。
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发表时间：2010-03-18
头都晕了,就为了个格式化就这么麻烦......
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发表时间：2010-03-19
这代码太复杂了
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发表时间：2010-03-19
这的没有必要这样写 太麻烦了
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发表时间：2010-03-19
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发表时间：2010-03-19
Date.prototype.format = function(style){
var o = {
"M+": this.getMonth() + 1, //month
"d+": this.getDate(), //day
"h+": this.getHours(), //hour
"m+": this.getMinutes(), //minute
"s+": this.getSeconds(), //second
"w+": "天一二三四五六".charAt(this.getDay()), //week
"q+": Math.floor((this.getMonth() + 3) / 3), //quarter
"S": this.getMilliseconds() //millisecond
}
if (/(y+)/.test(style)) {
style = style.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
}
for (var k in o) {
if (new RegExp("(" + k + ")").test(style)) {
style = style.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
}
}
return style;
};
这个是不是好点呢 |
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发表时间：2010-03-19
d: "String.leftPad(this.getDate(), 2, '0')",
D: "Date.getShortDayName(this.getDay())", // get localised short day name j: "this.getDate()", l: "Date.dayNames[this.getDay()]", N: "(this.getDay() ? this.getDay() : 7)", S: "this.getSuffix()", w: "this.getDay()", z: "this.getDayOfYear()", W: "String.leftPad(this.getWeekOfYear(), 2, '0')", F: "Date.monthNames[this.getMonth()]", m: "String.leftPad(this.getMonth() + 1, 2, '0')", M: "Date.getShortMonthName(this.getMonth())", // get localised short month name n: "(this.getMonth() + 1)", t: "this.getDaysInMonth()", L: "(this.isLeapYear() ? 1 : 0)", o: "(this.getFullYear() + (this.getWeekOfYear() == 1 && this.getMonth() > 0 ? +1 : (this.getWeekOfYear() >= 52 && this.getMonth() < 11 ? -1 : 0)))", Y: "this.getFullYear()", y: "('' + this.getFullYear()).substring(2, 4)", a: "(this.getHours() < 12 ? 'am' : 'pm')", A: "(this.getHours() < 12 ? 'AM' : 'PM')", g: "((this.getHours() % 12) ? this.getHours() % 12 : 12)", G: "this.getHours()", h: "String.leftPad((this.getHours() % 12) ? this.getHours() % 12 : 12, 2, '0')", H: "String.leftPad(this.getHours(), 2, '0')", i: "String.leftPad(this.getMinutes(), 2, '0')", s: "String.leftPad(this.getSeconds(), 2, '0')", u: "String.leftPad(this.getMilliseconds(), 3, '0')", O: "this.getGMTOffset()", P: "this.getGMTOffset(true)", T: "this.getTimezone()", Z: "(this.getTimezoneOffset() * -60)", |
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发表时间：2010-03-21
Relucent 写道
DateFormat = {
format : function(date,formatter){
if(date==null){return null;};
if(formatter==null){formatter = "yyyy-MM-dd";};
var year = date.getYear().toString();
var month = (date.getMonth() + 1).toString();
var day = date.getDate().toString();
var hours = date.getHours().toString();
var minutes = date.getMinutes().toString();
var seconds = date.getSeconds().toString();
var yearMarker = formatter.replace(/[^y]/g,'');
var monthMarker = formatter.replace(/[^M]/g,'');
var dayMarker = formatter.replace(/[^d]/g,'');
var hoursMarker = formatter.replace(/[^h]/g,'');
var minutesMarker = formatter.replace(/[^m]/g,'');
var secondsMarker = formatter.replace(/[^s]/g,'');
if(yearMarker.length == 2){year = year.substring(2,4);};
if(monthMarker.length > 1 && month.length==1){month = "0" + month;};
if(dayMarker.length > 1 && day.length==1){day = "0" + day;};
if(hoursMarker.length > 1 && hours.length==1){hours = "0" + hours;};
if(minutesMarker.length > 1 && minutes.length==1){minutes = "0" + minutes;};
if(secondsMarker.length > 1 && seconds.length==1){seconds = "0" + seconds;};
if(yearMarker.length>0){formatter = formatter.replace(yearMarker,year);}
if(monthMarker.length>0){formatter = formatter.replace(monthMarker,month);};
if(dayMarker.length>0){formatter = formatter.replace(dayMarker,day);};
if(hoursMarker.length>0){formatter = formatter.replace(hoursMarker,hours);};
if(minutesMarker.length>0){formatter = formatter.replace(minutesMarker,minutes);};
if(secondsMarker.length>0){formatter = formatter.replace(secondsMarker,seconds);};
return formatter;
},
parse : function(dateString,formatter){
var today = new Date();
if(dateString==null){return today;};
if(formatter==null){formatter = "yyyy-MM-dd";};
var yearMarker = formatter.replace(/[^y]/g,'');
var monthMarker = formatter.replace(/[^M]/g,'');
var dayMarker = formatter.replace(/[^d]/g,'');
var hoursMarker = formatter.replace(/[^h]/g,'');
var minutesMarker = formatter.replace(/[^m]/g,'');
var secondsMarker = formatter.replace(/[^s]/g,'');
var yearPosition = formatter.indexOf(yearMarker);
var yearLength = yearMarker.length;
var year = parseInt( dateString.substring(yearPosition ,yearPosition + yearLength) );
if(isNaN(year)){
year = today.getYear();
}else{
if( yearLength == 2){
if(year < 50 ){
year += 2000;
}else{
year += 1900;
};
};
};
var monthPosition = formatter.indexOf(monthMarker);
var month = parseInt( dateString.substring(monthPosition,monthPosition + monthMarker.length) );
if(isNaN(month)){
month = today.getMonth();
}else{
month-=1
};
var dayPosition = formatter.indexOf(dayMarker);
var day = parseInt( dateString.substring( dayPosition,dayPosition + dayMarker.length ) );
if(isNaN(day)){
day = today.getDate();
}else{
};
var hoursPosition = formatter.indexOf(hoursMarker);
var hours = parseInt( dateString.substring( hoursPosition,hoursPosition + hoursMarker.length ) );
if(isNaN(hours)){
hours = 0;
};
var minutesPosition = formatter.indexOf(minutesMarker);
var minutes = parseInt( dateString.substring( minutesPosition,minutesPosition + minutesMarker.length ) );
if(isNaN(minutes)){
minutes = 0;
};
var secondsPosition = formatter.indexOf(secondsMarker);
var seconds = parseInt( dateString.substring( secondsPosition,secondsPosition + secondsMarker.length ) );
if(isNaN(seconds)){
seconds = 0;
};
return new Date(year,month,day, hours,minutes,seconds);
}
};
//将一个 Date 格式化为日期/时间字符串。
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发表时间：2010-03-22
写得还可以，好不好是另外一说嘛，首先要鼓励同时也感谢兄弟和大家一起分享你的成功！
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发表时间：2010-03-22
感觉代码确实多了这么一点点!
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