blocks|key|723542|text|您一定要使用第二个表达式，因为JS中的月份是从0开始枚举的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|723543|您也可以使用Date.parse方法，但它使用不同的日期格式：|723544|var+timestamp+=+Date.parse("11/30/2011");
var+dateObject+=+new+Date(timestamp);|code-block|syntax|javascript|723545|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You definitely want to use the second expression since months in JS are enumerated from 0.
Also you may use Date.parse method, but it uses different date format:
<pre><code>var timestamp = Date.parse(&quot;11/30/2011&quot;);
var dateObject = new Date(timestamp);
</code></pre>

blocks|key|723582|text|语法如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|723583|new+Date(year,+month+[,+day,+hour,+minute,+second,+millisecond+])|code-block|syntax|javascript|723584|所以|723585|Date+d+=+new+Date(2011,10,30);|723586|是正确的；日、小时、分钟、秒、毫秒是可选的。|723587|https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date|offset|length|723588|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|21|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|12|8|@]|9|@$O|13|P|14|1|15]]|A|$]]|$1|Q|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|N]]]]

The syntax is as follows:

<pre><code>new Date(year, month [, day, hour, minute, second, millisecond ])
</code></pre>

so

<pre><code>Date d = new Date(2011,10,30);
</code></pre>

is correct; day, hour, minute, second, millisecond are optional.

<a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date" rel="noreferrer">https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date</a>

blocks|key|507466|text|var+d+=+new+Date(2011,10,30);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|507467|因为月份在js中是从0开始索引的。|unstyled|507468|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>var d = new Date(2011,10,30);
</code></pre>

as months are indexed from 0 in js.

blocks|key|507491|text|如上所述，有多种创建日期的方法。我不会重复同样的事情。下面是在Java+Script中将字符串转换为日期小方法，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|507492|function+compareDate(str1){
//+str1+format+should+be+dd/mm/yyyy.+Separator+can+be+anything+e.g.+/+or+-.+It+wont+effect
var+dt1+++=+parseInt(str1.substring(0,2));
var+mon1++=+parseInt(str1.substring(3,5));
var+yr1+++=+parseInt(str1.substring(6,10));
var+date1+=+new+Date(yr1,+mon1-1,+dt1);
return+date1;
}|code-block|syntax|javascript|507493|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

There are multiple methods of creating date as discussed above. I would not repeat same stuff. Here is small method to convert String to Date in Java Script if that is what you are looking for,

<pre><code>function compareDate(str1){
// str1 format should be dd/mm/yyyy. Separator can be anything e.g. / or -. It wont effect
var dt1 = parseInt(str1.substring(0,2));
var mon1 = parseInt(str1.substring(3,5));
var yr1 = parseInt(str1.substring(6,10));
var date1 = new Date(yr1, mon1-1, dt1);
return date1;
}
</code></pre>

blocks|key|507526|text|非常简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|507527|var+dt=new+Date("2011/11/30");|code-block|syntax|javascript|507528|日期应为ISO格式的yyyy/MM/dd。|507529|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Very simple:

<pre><code>var dt=new Date("2011/11/30");
</code></pre>

Date should be in ISO format yyyy/MM/dd.

blocks|key|507540|text|首先提取字符串，如下所示|type|unstyled|depth|inlineStyleRanges|entityRanges|data|507541|var+dateString+=+str.match(/%5E(\d{2})\/(\d{2})\/(\d{4})$/);|code-block|syntax|javascript|507542|然后,|507543|var+d+=+new+Date(+dateString[3],+dateString[2]-1,+dateString[1]+);|507544|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

First extract the string like this

<pre><code>var dateString = str.match(/^(\d{2})\/(\d{2})\/(\d{4})$/);
</code></pre>

Then,

<pre><code>var d = new Date( dateString[3], dateString[2]-1, dateString[1] );
</code></pre>

blocks|key|724183|text|我不敢相信javascript不能与解析日期保持更一致。当没有时区时，我听说默认的时区将从UTC更改为本地-希望web已经准备好了;)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|724184|在解析日期时，我更喜欢让Javascript来做繁重的工作。不过，如果能相当透明地处理本地时区问题就更好了。考虑到这两件事，这里有一个函数可以在当前状态下做到这一点--当Javascript发生变化时，它仍然可以工作，但是可以删除(当然，需要一点时间让人们赶上较旧的浏览器/nodejs)。|724185|function+strToDate(dateStr)
{
++++var+dateTry+=+new+Date(dateStr);

++++if+(!dateTry.getTime())
++++{
++++++++throw+new+Exception("Bad+Date!+dateStr:+"+%2B+dateStr);
++++}

++++var+tz+=+dateStr.trim().match(/(Z)%7C([%2B-](\d{2})\:?(\d{2}))$/);

++++if+(!tz)
++++{
++++++++var+newTzOffset+=+dateTry.getTimezoneOffset()+/+60;
++++++++var+newSignStr+=+(newTzOffset+>=+0)+?+'-'+:+'%2B';
++++++++var+newTz+=+newSignStr+%2B+('0'+%2B+Math.abs(newTzOffset)).slice(-2)+%2B+':00';

++++++++dateStr+=+dateStr.trim()+%2B+newTz;
++++++++dateTry+=+new+Date(dateStr);

++++++++if+(!dateTry.getTime())
++++++++{
++++++++++++throw+new+Exception("Bad+Date!+dateStr:+"+%2B+dateStr);
++++++++}
++++}

++++return+dateTry;
}|code-block|syntax|javascript|724186|我们无论如何都需要一个date对象，所以创建一个。如果有时区，我们就完成了。否则，使用%2Bhh:mm格式创建本地时区字符串(比%2Bhhmm更容易接受)。|724187|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I can't believe javascript isn't more consistent with parsing dates. And I hear the default when there is no timezone is gonna change from UTC to local -- hope the web is prepared ;)

I prefer to let Javascript do the heavy lifting when it comes to parsing dates. However it would be nice to handle the local timezone issue fairly transparently. With both of these things in mind, here is a function to do it with the current status quo -- and when Javascript changes it will still work but then can be removed (with a little time for people to catch up with older browsers/nodejs of course).

<pre><code>function strToDate(dateStr)
{
 var dateTry = new Date(dateStr);

 if (!dateTry.getTime())
 {
 throw new Exception("Bad Date! dateStr: " + dateStr);
 }

 var tz = dateStr.trim().match(/(Z)|([+-](\d{2})\:?(\d{2}))$/);

 if (!tz)
 {
 var newTzOffset = dateTry.getTimezoneOffset() / 60;
 var newSignStr = (newTzOffset &gt;= 0) ? '-' : '+';
 var newTz = newSignStr + ('0' + Math.abs(newTzOffset)).slice(-2) + ':00';

 dateStr = dateStr.trim() + newTz;
 dateTry = new Date(dateStr);

 if (!dateTry.getTime())
 {
 throw new Exception("Bad Date! dateStr: " + dateStr);
 }
 }

 return dateTry;
}
</code></pre>

We need a date object regardless; so createone. If there is a timezone, we are done. Otherwise, create a local timezone string using the +hh:mm format (more accepted than +hhmm).

Having this string <code>30/11/2011</code>. I want to convert it to date object.

Do I need to use :


<pre><code>Date d = new Date(2011,11,30); /* months 1..12? */
</code></pre>

or 


<pre><code>Date d = new Date(2011,10,30); /* months 0..11? */
</code></pre>

?

How to create a date object from string in javascript

Java

拥有这个字符串30/11/2011。我想把它转换成date对象。我是否需要使用：Date d = new Date(2011,11,30);   /* months 1..12? */或Date d = new Date(2011,10,30);   /* months 0..11? */

问如何在javascript中从字符串创建date对象
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