blocks|key|196832|text|日期对象的定义为month字段使用值0-11。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|196833|我认为使用字符串的构造函数依赖于系统(更不用说区域/时区相关)，所以最好使用构造函数将年份/月/日指定为独立的参数。|196834|顺便说一下，在火狐，|196835|new+Date("04/02/2008");|code-block|syntax|javascript|196836|对我来说很好-它会解释斜杠，但不会连字符。我认为这证明了我的观点:使用字符串构造日期对象是个问题。对月/日/年使用显式值：|196837|new+Date(2008,+3,+2);|196838|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Date^0|8|5|0|7|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|17|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|18|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|19|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|1A|8|@]|D|@]|E|$M|N]]|$1|S|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

It is the <a href="http://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Date" rel="noreferrer">definition of the Date object</a> to use values 0-11 for the <code>month</code> field.

I believe that the constructor using a String is system-dependent (not to mention locale/timezone dependent) so you are probably better off using the constructor where you specify year/month/day as seperate parameters.

BTW, in Firefox, 

<pre><code>new Date("04/02/2008");
</code></pre>

works fine for me - it will interpret slashes, but not hyphens. I think this proves my point that using a String to construct a Date object is problemsome. Use explicit values for month/day/year instead:

<pre><code>new Date(2008, 3, 2);
</code></pre>

blocks|key|196862|text|大胆的陈述。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|196863|这可能会引起您的兴趣：JavaScript漂亮的日期。|offset|length|196864|entityMap|0|LINK|mutability|MUTABLE|url|http://ejohn.org/blog/javascript-pretty-date/^0|0|B|F|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Bold statement.

This might have your interest: <a href="http://ejohn.org/blog/javascript-pretty-date/" rel="nofollow noreferrer">JavaScript Pretty Date</a>.

blocks|key|1195891|text|你说得对，月份是指数，所以一月是0月份，十二月是11月份.|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1195892|-正如ECMA脚本定义中明确指出的那样，没有任何变通之处，尽管简单的技巧通常会起作用：|1195893|var+myDate+=+"2008,03,02".split(",");
var+theDate+=+new+Date(myDate[0],myDate[1]-1,myDate[2]);+
alert(theDate);|code-block|syntax|javascript|1195894|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're quite right, month is indicated as an index, so January is month number 0 and December is month number 11 ...

-- and there is no work-around as it is stated clearly in the ECMA-script-definition, though simple tricks commonly will work:

<pre><code>var myDate = "2008,03,02".split(",");
var theDate = new Date(myDate[0],myDate[1]-1,myDate[2]); 
alert(theDate);
</code></pre>

blocks|key|196909|text|不错的把戏，我刚刚发现了困难的方法(通过它思考)。但我用了一个更自然的连字符字符串:-)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|196910|var+myDateArray+=+"2008-03-02".split("-");
var+theDate+=+new+Date(myDateArray[0],myDateArray[1]-1,myDateArray[2]);+
alert(theDate);|code-block|syntax|javascript|196911|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|$]]

nice trick indeed, which i just found out the hard way (by thinking thru it).
But i used a more natural date string with hyphen :-)

<pre><code>var myDateArray = "2008-03-02".split("-");
var theDate = new Date(myDateArray[0],myDateArray[1]-1,myDateArray[2]); 
alert(theDate);
</code></pre>

blocks|key|861169|text|使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|861170|var+theDate+=+new+Date(myDate[0],myDate[1]-1,myDate[2]);+|code-block|syntax|javascript|861171|很好，但是当月份和日值错误时，它会显示出一些奇怪的行为。|861172|尝试将myDate[1]-1和myDate[2]的值都设置为55的日期。Javascript仍然返回日期，尽管输入显然不正确。|offset|length|style|CODE|861173|在这种情况下，我更希望javascript返回错误。|861174|entityMap^0|0|0|0|3|B|F|9|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@$K|W|L|X|M|N]|$K|Y|L|Z|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

Using

<pre><code>var theDate = new Date(myDate[0],myDate[1]-1,myDate[2]); 
</code></pre>

Is fine, but it shows some strange behaviors when month and day values are erroneous.

Try casting a date where both <code>myDate[1]-1</code> and <code>myDate[2]</code> have values of 55. Javascript still returns a date, though the input is obviously not correct.

I would have preferred javascript to return an error in such a case.

blocks|key|1195957|text|@弗兰克:你说得对。当你需要验证日期时，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1195958|var+theDate+=+new+Date(myDate[0],myDate[1]-1,myDate[2]);+|code-block|syntax|javascript|1195959|都不管用。|1195960|所发生的是，它不断地添加额外的参数。例如：|1195961|new+Date("2012",+"11",+"57")+//+Date+{Sat+Jan+26+2013+00:00:00+GMT%2B0530+(IST)}|1195962|对象接受额外的天数(57-31=26)，并将其添加到我们创建的日期。|1195963|或者，如果我们尝试使用以下方法构造日期对象：|1195964|new+Date("2012",+"11",+"57",+"57")+//Date+{Mon+Jan+28+2013+09:00:00+GMT%2B0530+(IST)}|1195965|增加2天9小时(57=24%2B24%2B9)。|1195966|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

@Frank: you are right. When you need to validate date,

<pre><code>var theDate = new Date(myDate[0],myDate[1]-1,myDate[2]); 
</code></pre>

will not work.

What happens is that it keeps on adding the extra parameter. For example:

<pre><code>new Date("2012", "11", "57") // Date {Sat Jan 26 2013 00:00:00 GMT+0530 (IST)}
</code></pre>

Date object takes the extra days (57-31=26) and adds it to the date we created.

Or if we try constructing a date object with:

<pre><code>new Date("2012", "11", "57", "57") //Date {Mon Jan 28 2013 09:00:00 GMT+0530 (IST)}
</code></pre>

an extra 2 days and 9 hours (57=24+24+9) are added.

I have an issue - 

The javascript <code>Date("mm-dd-yyyy")</code> constructor doesn't work for FF. It works fine for IE.

<ul>
<li>IE : <code>new Date("04-02-2008")</code> => <code>"Wed Apr 2 00:00:00 EDT 2008"</code></li>
<li>FF2 : <code>new Date("04-02-2008")</code> => <code>Invalid Date</code> </li>
</ul>

So lets try another constructor. Trying this constructor <code>Date("yyyy", "mm", "dd")</code>

<ul>
<li>IE : <code>new Date("2008", "04", "02");</code> => <code>"Fri May 2 00:00:00 EDT 2008"</code></li>
<li>FF : <code>new Date("2008", "04", "02");</code> => <code>"Fri May 2 00:00:00 EDT 2008"</code></li>
<li>IE : <code>new Date("2008", "03", "02");</code> => <code>"Wed Apr 2 00:00:00 EDT 2008"</code></li>
<li>FF : <code>new Date("2008", "03", "02");</code> => <code>"Wed Apr 2 00:00:00 EDT 2008"</code></li>
</ul>

So the <code>Date("yyyy", "mm", "dd")</code> constructor uses an index of <code>0</code> to represent January. 

Has anyone dealt with this? 
There must be a better way than subtracting 1 from the months.

Javascript Date() constructor doesn't work

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有个问题-javascript Date("mm-dd-yyyy")构造函数不适用于FF。它对IE很好。IE：new Date("04-02-2008") => "Wed Apr 2 00:00:00 EDT 2008"FF2：new Date("04-02-2008") => Invalid Date因此，让我们尝...

问Javascript ()构造函数不工作
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