如何将天数加到今天的日期?

我需要能够添加1,2,5或10天到今天的日期使用jQuery。

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小开

你可以使用JavaScript，不需要jQuery:

var someDate = new Date();
var numberOfDaysToAdd = 6;
var result = someDate.setDate(someDate.getDate() + numberOfDaysToAdd);
console.log(new Date(result))
小开

您可以像这样扩展javascript Date对象

Date.prototype.addDays = function(days) {
this.setDate(this.getDate() + parseInt(days));
return this;
};

在javascript代码中，你可以调用

var currentDate = new Date();
// to add 4 days to current date
currentDate.addDays(4);
小开

你可以使用这个库“Datejs开源JavaScript Date library”。

小开

我发现这是javascript的一个痛苦。看看这个帮助过我的链接。您是否考虑过扩展date对象。

http://pristinecoder.com/Blog/post/javascript-formatting-date-in-javascript

/*
* Date Format 1.2.3
* (c) 2007-2009 Steven Levithan <stevenlevithan.com>
* MIT license
*
* Includes enhancements by Scott Trenda <scott.trenda.net>
* and Kris Kowal <cixar.com/~kris.kowal/>
*
* Accepts a date, a mask, or a date and a mask.
* Returns a formatted version of the given date.
* The date defaults to the current date/time.
* The mask defaults to dateFormat.masks.default.
*/


var dateFormat = function () {
var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
timezoneClip = /[^-+\dA-Z]/g,
pad = function (val, len) {
val = String(val);
len = len || 2;
while (val.length < len) val = "0" + val;
return val;
};


// Regexes and supporting functions are cached through closure
return function (date, mask, utc) {
var dF = dateFormat;


// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
mask = date;
date = undefined;
}


// Passing date through Date applies Date.parse, if necessary
date = date ? new Date(date) : new Date;
if (isNaN(date)) throw SyntaxError("invalid date");


mask = String(dF.masks[mask] || mask || dF.masks["default"]);


// Allow setting the utc argument via the mask
if (mask.slice(0, 4) == "UTC:") {
mask = mask.slice(4);
utc = true;
}


var _ = utc ? "getUTC" : "get",
d = date[_ + "Date"](),
D = date[_ + "Day"](),
m = date[_ + "Month"](),
y = date[_ + "FullYear"](),
H = date[_ + "Hours"](),
M = date[_ + "Minutes"](),
s = date[_ + "Seconds"](),
L = date[_ + "Milliseconds"](),
o = utc ? 0 : date.getTimezoneOffset(),
flags = {
d:    d,
dd:   pad(d),
ddd:  dF.i18n.dayNames[D],
dddd: dF.i18n.dayNames[D + 7],
m:    m + 1,
mm:   pad(m + 1),
mmm:  dF.i18n.monthNames[m],
mmmm: dF.i18n.monthNames[m + 12],
yy:   String(y).slice(2),
yyyy: y,
h:    H % 12 || 12,
hh:   pad(H % 12 || 12),
H:    H,
HH:   pad(H),
M:    M,
MM:   pad(M),
s:    s,
ss:   pad(s),
l:    pad(L, 3),
L:    pad(L > 99 ? Math.round(L / 10) : L),
t:    H < 12 ? "a"  : "p",
tt:   H < 12 ? "am" : "pm",
T:    H < 12 ? "A"  : "P",
TT:   H < 12 ? "AM" : "PM",
Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
};


return mask.replace(token, function ($0) {
return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
});
};
}();


// Some common format strings
dateFormat.masks = {
"default":      "ddd mmm dd yyyy HH:MM:ss",
shortDate:      "m/d/yy",
mediumDate:     "mmm d, yyyy",
longDate:       "mmmm d, yyyy",
fullDate:       "dddd, mmmm d, yyyy",
shortTime:      "h:MM TT",
mediumTime:     "h:MM:ss TT",
longTime:       "h:MM:ss TT Z",
isoDate:        "yyyy-mm-dd",
isoTime:        "HH:MM:ss",
isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};


// Internationalization strings
dateFormat.i18n = {
dayNames: [
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
],
monthNames: [
"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
]
};


// For convenience...
Date.prototype.format = function (mask, utc) {
return dateFormat(this, mask, utc);
};
小开

这里公认的答案给了我不可预测的结果，有时会奇怪地加上月和年。

我能找到的最可靠的方法就是在这里 将日期添加到Javascript Date对象，并增加月份 < / p > 
var dayOffset = 20;
var millisecondOffset = dayOffset * 24 * 60 * 60 * 1000;
december.setTime(december.getTime() + millisecondOffset);

编辑:尽管它对一些人有效，但我不认为它是完全正确的。我建议使用一个更流行的答案，或者使用像http://momentjs.com/

小开

我发现JavaScript可以返回一个正确的日期，当你使用new Date(nYear, nMonth, nDate);与该月的结束天。 当你使用这个函数时，尝试查看dDate变量的结果

var dDate = new Date(2012, 0, 34); // the result is 3 Feb 2012

我有一个SkipDate函数来分享:

    function DaysOfMonth(nYear, nMonth) {
switch (nMonth) {
case 0:     // January
return 31; break;
case 1:     // February
if ((nYear % 4) == 0) {
return 29;
}
else {
return 28;
};
break;
case 2:     // March
return 31; break;
case 3:     // April
return 30; break;
case 4:     // May
return 31; break;
case 5:     // June
return 30; break;
case 6:     // July
return 31; break;
case 7:     // August
return 31; break;
case 8:     // September
return 30; break;
case 9:     // October
return 31; break;
case 10:     // November
return 30; break;
case 11:     // December
return 31; break;
}
};


function SkipDate(dDate, skipDays) {
var nYear = dDate.getFullYear();
var nMonth = dDate.getMonth();
var nDate = dDate.getDate();
var remainDays = skipDays;
var dRunDate = dDate;


while (remainDays > 0) {
remainDays_month = DaysOfMonth(nYear, nMonth) - nDate;
if (remainDays > remainDays_month) {
remainDays = remainDays - remainDays_month - 1;
nDate = 1;
if (nMonth < 11) { nMonth = nMonth + 1; }
else {
nMonth = 0;
nYear = nYear + 1;
};
}
else {
nDate = nDate + remainDays;
remainDays = 0;
};
dRunDate = Date(nYear, nMonth, nDate);
}
return new Date(nYear, nMonth, nDate);
};
小开
Krishna Chytanya的原型解决方案非常好，但需要一个微小但重要的改进。 days参数必须解析为Integer，以避免当days是“1”这样的字符串时进行奇怪的计算。(我需要几个小时来找出我的应用程序出了什么问题。)

Date.prototype.addDays = function(days) {
this.setDate(this.getDate() + parseInt(days));
return this;
};
即使你不使用这个原型函数: 当使用setDate()时，一定要确保有一个Integer

小开

为什么不简单地使用

function addDays(theDate, days) {
return new Date(theDate.getTime() + days*24*60*60*1000);
}


var newDate = addDays(new Date(), 5);

或者-5减去5天

小开

这是5天:

var myDate = new Date(new Date().getTime()+(5*24*60*60*1000));

你不需要JQuery，你可以用JavaScript来做，希望你得到它。

小开

纯JS解决方案，带有日期格式的YYYY-mm-dd格式

var someDate = new Date('2014-05-14');
someDate.setDate(someDate.getDate() + 15); //number  of days to add, e.x. 15 days
var dateFormated = someDate.toISOString().substr(0,10);
console.log(dateFormated);

小开 
Date.prototype.addDays = function(days)
{
var dat = new Date(this.valueOf() + days * 24 * 60 * 60 * 1000 );
return dat;
}
小开

如果不需要Date中的时间，那么您可以简单地使用Date对象的方法提取月、年和日，并在Day部分添加“n”天。

var n=5; //number of days to add.
var today=new Date(); //Today's Date
var requiredDate=new Date(today.getFullYear(),today.getMonth(),today.getDate()+n)

裁判:Mozilla Javascript GetDate

编辑:Ref: Mozilla JavaScript日期

小开

这里有一个对我有用的解决办法。

function calduedate(ndays){


var newdt = new Date(); var chrday; var chrmnth;
newdt.setDate(newdt.getDate() + parseInt(ndays));


var newdate = newdt.getFullYear();
if(newdt.getMonth() < 10){
newdate = newdate+'-'+'0'+newdt.getMonth();
}else{
newdate = newdate+'-'+newdt.getMonth();
}
if(newdt.getDate() < 10){
newdate = newdate+'-'+'0'+newdt.getDate();
}else{
newdate = newdate+'-'+newdt.getDate();
}


alert("newdate="+newdate);


}
小开 

function addDays(n){
var t = new Date();
t.setDate(t.getDate() + n);
var month = "0"+(t.getMonth()+1);
var date = "0"+t.getDate();
month = month.slice(-2);
date = date.slice(-2);
var date = date +"/"+month +"/"+t.getFullYear();
alert(date);
}


addDays(5);

小开

[更新]在继续之前，考虑阅读这…

Moment.js

从在这里安装moment.js。

__abc1: __abc0

__abc1: $ __abc0

接下来,

var date = moment()
.add(2,'d') //replace 2 with number of days you want to add
.toDate(); //convert it to a Javascript Date Object if you like

链接参考:http://momentjs.com/docs/#/manipulating/add/

Moment.js是一个惊人的Javascript库来管理日期对象

祝你好运。

小开

你可以尝试这样做，不需要JQuery: timeSolver.js

例如，今天加上5天:

var newDay = timeSolver.add(new Date(),5,"day");

你也可以按小时、月等添加。


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