如何在JavaScript中将完整日期转换为短日期? [英] How to convert a full date to a short date in javascript?
问题描述
我想要做到这一点
$ / $> $ / $> $ / $> var startDate =2010年1月9日星期一;
var convertedStartDate = new Date(startDate);
var month = convertedStartDate.getMonth()+ 1
var day = convertedStartDate.getDay();
var year = convertedStartDate.getFullYear();
var shortStartDate = month +/+ day +/+ year;
然而,它必须考虑日期格式不同,因为日期返回1而不是9。 / $>
周(0 =太阳,1 =星期一,... 6 =星期六)。使用 getDate()
返回月份当天的数字:
var day = convertedStartDate.getDate();
如果您愿意,可以尝试将自定义格式函数添加到<$ c
$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ b return(this.getMonth()+ 1)+
/+ this.getDate()+
/+ this.getFullYear(); (b
完成后,可以调用 formatMMDDYYY()
放在 Date
对象的任何实例上。当然,这只是一个非常具体的例子,如果你真的需要它,你可以编写一个基于格式化字符串的通用格式化函数,类似于java的SimpleDateeFormat( http://java.sun.com/j2se/1.4.2/docs/api/java /text/SimpleDateFormat.html )
(正切: Date
对象总是让我困惑。 getYear()
vs getFullYear()
, getDate()
vs getDay()
, getDate()
取值范围为1..31,但 getMonth ()
from 0..11
这是一团糟,我总是需要窥视一下 http://www.w3schools.com/jsref/jsref_obj_date.asp )
I have a date like this Monday, January 9, 2010
I now want to convert it to
1/9/2010 mm/dd/yyyy
I tried to do this
var startDate = "Monday, January 9, 2010";
var convertedStartDate = new Date(startDate);
var month = convertedStartDate.getMonth() + 1
var day = convertedStartDate.getDay();
var year = convertedStartDate.getFullYear();
var shortStartDate = month + "/" + day + "/" + year;
However it must be thinking the date is in a different format since day returns 1 instead of 9.
The getDay()
method returns a number to indicate the day in week (0=Sun, 1=Mon, ... 6=Sat). Use getDate()
to return a number for the day in month:
var day = convertedStartDate.getDate();
If you like, you can try to add a custom format function to the prototype of the Date
object:
Date.prototype.formatMMDDYYYY = function(){
return (this.getMonth() + 1) +
"/" + this.getDate() +
"/" + this.getFullYear();
}
After doing this, you can call formatMMDDYYY()
on any instance of the Date
object. Of course, this is just a very specific example, and if you really need it, you can write a generic formatting function that would do this based on a formatting string, kinda like java's SimpleDateeFormat (http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html)
(tangent: the Date
object always confuses me... getYear()
vs getFullYear()
, getDate()
vs getDay()
, getDate()
ranges from 1..31, but getMonth()
from 0..11
It's a mess, and I always need to take a peek. http://www.w3schools.com/jsref/jsref_obj_date.asp)
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