如何在JavaScript中获取当前日期？
当前回答
那么多复杂的答案。。。
只需使用new Date（），如果需要它作为字符串，只需使用newDate（）.toISOString（）
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其他回答
这可能会帮助你
var date = new Date();
console.log(date.getDate()+'/'+(date.getMonth()+1)+'/'+date.getFullYear());
这将以dd/MM/yyyy格式打印当前日期
这是我目前最喜欢的，因为它既灵活又模块化。它是（至少）三个简单函数的集合：
/**
* Returns an array with date / time information
* Starts with year at index 0 up to index 6 for milliseconds
*
* @param {Date} date date object. If falsy, will take current time.
* @returns {[]}
*/
getDateArray = function(date) {
date = date || new Date();
return [
date.getFullYear(),
exports.pad(date.getMonth()+1, 2),
exports.pad(date.getDate(), 2),
exports.pad(date.getHours(), 2),
exports.pad(date.getMinutes(), 2),
exports.pad(date.getSeconds(), 2),
exports.pad(date.getMilliseconds(), 2)
];
};
下面是pad函数：
/**
* Pad a number with n digits
*
* @param {number} number number to pad
* @param {number} digits number of total digits
* @returns {string}
*/
exports.pad = function pad(number, digits) {
return new Array(Math.max(digits - String(number).length + 1, 0)).join(0) + number;
};
最后，我可以手动创建日期字符串，也可以使用一个简单的函数来实现：
/**
* Returns nicely formatted date-time
* @example 2015-02-10 16:01:12
*
* @param {object} date
* @returns {string}
*/
exports.niceDate = function(date) {
var d = exports.getDateArray(date);
return d[0] + '-' + d[1] + '-' + d[2] + ' ' + d[3] + ':' + d[4] + ':' + d[5];
};
/**
* Returns a formatted date-time, optimized for machines
* @example 2015-02-10_16-00-08
*
* @param {object} date
* @returns {string}
*/
exports.roboDate = function(date) {
var d = exports.getDateArray(date);
return d[0] + '-' + d[1] + '-' + d[2] + '_' + d[3] + '-' + d[4] + '-' + d[5];
};
已缩小2.39KB。一个文件。https://github.com/rhroyston/clock-js只是想帮忙。。。
你可以使用我下面给出的DATE API，每天使用日期格式以及获取当前日期、昨天等。如何使用例如
var dt = new Date();
/// ANY DATE YOU WANT -- dt = new Date(""July 21, 1983 01:15:00"")
dateObj = dt.getFormattedDate();
alert( dateObj.isToday() );
alert( dateObj.todayDay() );
alert( dateObj.monthNameDayYear() );
(function () {
fnDateProcessor = function () {
var that = this;
return {
yyyymmdd: function (separator) {
var fdate = this.formatDate(true, true) ,
separator = separator ? separator : "-";
return fdate.year + separator + fdate.month + separator + fdate.day;
},
monthNameDayYear: function () {
var fdate = this.formatDate(true, true);
return fdate.monthName + " " + fdate.day + ", " + fdate.year;
},
ddmmyyyy: function (separator) {
var fdate = this.formatDate(true, true) ,
separator = separator ? separator : "/";
return fdate.day + separator + fdate.month + separator + fdate.year;
},
meridianTime: function () {
var fdate = this.formatDate();
return fdate.hour + ":" + fdate.minute + " " + fdate.meridian;
},
monthDay: function (separator) {
var fdate = this.formatDate();
separator = checkSeparator(separator);
return fdate.monthName.substring(0, 3) + separator + fdate.day;
},
weekMonthDayYear: function () {
var fdate = this.formatDate();
//separator = checkSeparator(separator);
return fdate.weekDay + " " + fdate.monthName.substring(0, 3) +
fdate.day + " ," + fdate.year;
},
timeZoneInclusive: function () {
return new Date(that);
},
todayDay: function () { return new Date().getDate(); },
todayMonth: function () { return new Date().getMonth() + 1; },
dateDay: function () { return this.formatDate().day; },
dateMonth: function () { return this.formatDate().month; },
isToday: function () { return this.sameDate(new Date()); },
isYesterday: function () {
d = new Date(); d.setDate(d.getDate() - 1);
return this.sameDate(d);
},
formatDate: function () {
var zeroPaddedMnth = true, zeroPaddedDay = false,
zeroPaddedHr = false, zeroPaddedMin = true;
// Possible to take Options arg that overide / merge to defaults
var monthNames = [
"January", "February", "March",
"April", "May", "June", "July",
"August", "September", "October",
"November", "December"
];
var weekDays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
var day = getFormattedDay(that.getDate(), zeroPaddedDay);
var monthIndex = that.getMonth();
var month = getFormattedMonth(monthIndex + 1, zeroPaddedMnth);
var year = that.getFullYear();
var wkDay = that.getDay();
var hour = getFormattedHour(that.getHours(), zeroPaddedHr);
var minute = getFormattedMinute(that.getMinutes(), zeroPaddedMin);
var meridian = getMeridian(that.getHours());
return {
"day": day, "monthName": monthNames[monthIndex], "month": month,
"weekDay": weekDays[wkDay], "year": year, "hour": hour, "minute": minute,
"meridian": meridian
};
},
compareDate: function (d2) { /// validates if caller is less than argument
d2 = _isString(d2) ? new Date(d2) : d2;
return !this.sameDate(d2)
&& typeof d2 != "number"
? that < d2 : false;
},
sameDate: function (d) {
return that.getFullYear() === d.getFullYear()
&& that.getDate() === d.getDate()
&& that.getMonth() === d.getMonth();
},
dateAfter: function (separator) {
var fdate = this.formatDate();
var separator = separator ? separator : "-";
return fdate.year + separator + fdate.month + separator + (fdate.day + 1);
}
};
};
function _isString(obj) {
var toString = Object.prototype.toString;
return toString.call(obj) == '[object String]';
}
function checkSeparator(separator) {
// NOT GENERIC ... NEEDS REVISION
switch (separator) {
case " ": sep = separator; break;
case ",": sep = " ,"; break;
default:
sep = " "; break;
}
return sep;
}
function getFormattedHour(h, zeroPadded) {
h = h % 12;
h = h ? h : 12; // 12 instead of 00
return zeroPadded ? addZero(h) : h;
}
function getFormattedMinute(m, zeroPadded) {
return zeroPadded ? addZero(m) : m;
}
function getFormattedDay(dd, zeroPadded) {
return zeroPadded ? addZero(dd) : dd;
}
function getFormattedMonth(mm, zeroPadded) {
return zeroPadded ? addZero(mm) : mm;
}
function getMeridian(hr) {
return hr >= 12 ? 'PM' : 'AM';
}
function addZero(i) {
if (i < 10) {
i = "0" + i;
}
return i;
}
Date.prototype.getFormattedDate = fnDateProcessor;
} ());
那么多复杂的答案。。。
只需使用new Date（），如果需要它作为字符串，只需使用newDate（）.toISOString（）
享受
