blocks|key|988291|text|Here+is+one+way|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|988292|​|988293|const+date1+=+new+Date('7/13/2010');
const+date2+=+new+Date('12/15/2010');
const+diffTime+=+Math.abs(date2+-+date1);
const+diffDays+=+Math.ceil(diffTime+/+(1000+*+60+*+60+*+24));+
console.log(diffTime+%2B+"+milliseconds");
console.log(diffDays+%2B+"+days");|code-block|syntax|javascript|988294|988295|注意，我们需要用引号将日期括起来。代码的其余部分获取以毫秒为单位的时间差，然后除以得到天数。日期应为mm/dd/yyyy格式。|988296|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/JS69L/1/^0|0|F|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|10|8|@]|9|@]|C|$I|J]]|$1|K|3|E|5|6|7|11|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|12|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]]]

<p><a href="http://jsfiddle.net/JS69L/1/" rel="noreferrer">Here is one way</a>:</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const date1 = new Date('7/13/2010');
const date2 = new Date('12/15/2010');
const diffTime = Math.abs(date2 - date1);
const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24)); 
console.log(diffTime + " milliseconds");
console.log(diffDays + " days");</code></pre>
</div>
</div>
</p>

<p>Observe that we need to enclose the date in quotes. The rest of the code gets the time difference in milliseconds and then divides to get the number of days. Date expects mm/dd/yyyy format.</p>


blocks|key|988298|text|var+date1+=+new+Date("7/11/2010");
var+date2+=+new+Date("8/11/2010");
var+diffDays+=+parseInt((date2+-+date1)+/+(1000+*+60+*+60+*+24),+10);+

alert(diffDays+)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|988299|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>var date1 = new Date("7/11/2010");
var date2 = new Date("8/11/2010");
var diffDays = parseInt((date2 - date1) / (1000 * 60 * 60 * 24), 10); 

alert(diffDays )
</code></pre>


blocks|key|1202828|text|这是一个使用moment.js的解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1202829|var+a+=+moment('7/11/2010','M/D/YYYY');
var+b+=+moment('12/12/2010','M/D/YYYY');
var+diffDays+=+b.diff(a,+'days');
alert(diffDays);|code-block|syntax|javascript|1202830|我使用了您的原始输入值，但是您没有指定格式，所以我假设第一个值是7月11日。如果计划是11月7日，则将格式调整为D/M/YYYY。|style|CODE|1202831|entityMap|0|LINK|mutability|MUTABLE|url|http://momentjs.com/^0|6|9|0|0|0|1K|8|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

<p>Here is a solution using <a href="http://momentjs.com" rel="noreferrer">moment.js</a>:</p>

<pre><code>var a = moment('7/11/2010','M/D/YYYY');
var b = moment('12/12/2010','M/D/YYYY');
var diffDays = b.diff(a, 'days');
alert(diffDays);
</code></pre>

<p>I used your original input values, but you didn't specify the format so I assumed the first value was July 11th.  If it was intended to be November 7th, then adjust the format to <code>D/M/YYYY</code> instead.</p>


blocks|key|1202872|text|我尝试了很多方法，发现使用日期选择器是最好的，但日期格式会导致JavaScript出现问题……|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1202873|所以这就是我的答案，可以开箱即用。|1202874|<input+type="text"+id="startdate">
<input+type="text"+id="enddate">
<input+type="text"+id="days">

<script+src="https://code.jquery.com/jquery-1.8.3.js"></script>
<script+src="https://code.jquery.com/ui/1.10.0/jquery-ui.js"></script>
<link+rel="stylesheet"+href="http://code.jquery.com/ui/1.10.3/themes/redmond/jquery-ui.css"+/>
<script>
$(document).ready(function()+{

$(+"#startdate,#enddate"+).datepicker({
changeMonth:+true,
changeYear:+true,
firstDay:+1,
dateFormat:+'dd/mm/yy',
})

$(+"#startdate"+).datepicker({+dateFormat:+'dd-mm-yy'+});
$(+"#enddate"+).datepicker({+dateFormat:+'dd-mm-yy'+});

$('#enddate').change(function()+{
var+start+=+$('#startdate').datepicker('getDate');
var+end+++=+$('#enddate').datepicker('getDate');

if+(start<end)+{
var+days+++=+(end+-+start)/1000/60/60/24;
$('#days').val(days);
}
else+{
alert+("You+cant+come+back+before+you+have+been!");
$('#startdate').val("");
$('#enddate').val("");
$('#days').val("");
}
});+//end+change+function
});+//end+ready
</script>|code-block|syntax|javascript|1202875|可以在这里看到小提琴DEMO|offset|length|1202876|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/mikeys4u/3TA4s/1/^0|0|0|0|A|4|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

<p>I tried lots of ways, and found that using datepicker was the best, but the date format causes problems with JavaScript....</p>

<p>So here's my answer and can be run out of the box.</p>

<pre><code>&lt;input type="text" id="startdate"&gt;
&lt;input type="text" id="enddate"&gt;
&lt;input type="text" id="days"&gt;

&lt;script src="https://code.jquery.com/jquery-1.8.3.js"&gt;&lt;/script&gt;
&lt;script src="https://code.jquery.com/ui/1.10.0/jquery-ui.js"&gt;&lt;/script&gt;
&lt;link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/redmond/jquery-ui.css" /&gt;
&lt;script&gt;
$(document).ready(function() {

$( "#startdate,#enddate" ).datepicker({
changeMonth: true,
changeYear: true,
firstDay: 1,
dateFormat: 'dd/mm/yy',
})

$( "#startdate" ).datepicker({ dateFormat: 'dd-mm-yy' });
$( "#enddate" ).datepicker({ dateFormat: 'dd-mm-yy' });

$('#enddate').change(function() {
var start = $('#startdate').datepicker('getDate');
var end   = $('#enddate').datepicker('getDate');

if (start&lt;end) {
var days   = (end - start)/1000/60/60/24;
$('#days').val(days);
}
else {
alert ("You cant come back before you have been!");
$('#startdate').val("");
$('#enddate').val("");
$('#days').val("");
}
}); //end change function
}); //end ready
&lt;/script&gt;
</code></pre>

<p>a Fiddle can be seen here <a href="http://jsfiddle.net/mikeys4u/3TA4s/1/" rel="noreferrer">DEMO</a></p>


blocks|key|988422|text|这是从一个日期中减去另一个日期的代码。此示例将日期转换为对象，因为除非是Date对象，否则getTime()函数不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|988423|++++var+dat1+=+document.getElementById('inputDate').value;
++++++++++++++++var+date1+=+new+Date(dat1)//converts+string+to+date+object
++++++++++++++++alert(date1);
++++++++++++++++var+dat2+=+document.getElementById('inputFinishDate').value;
++++++++++++++++var+date2+=+new+Date(dat2)
++++++++++++++++alert(date2);

++++++++++++++++var+oneDay+=+24+*+60+*+60+*+1000;+//+hours*minutes*seconds*milliseconds
++++++++++++++++var+diffDays+=+Math.abs((date1.getTime()+-+date2.getTime())+/+(oneDay));
++++++++++++++++alert(diffDays);|code-block|syntax|javascript|988424|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|$]]

<p>This is the code to subtract one date from another. This example converts the dates to objects as the getTime() function won't work unless it's an Date object.</p>

<pre><code>    var dat1 = document.getElementById('inputDate').value;
                var date1 = new Date(dat1)//converts string to date object
                alert(date1);
                var dat2 = document.getElementById('inputFinishDate').value;
                var date2 = new Date(dat2)
                alert(date2);

                var oneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds
                var diffDays = Math.abs((date1.getTime() - date2.getTime()) / (oneDay));
                alert(diffDays);
</code></pre>


<p>How do I get the difference between 2 dates in full days (I don't want any fractions of a day)</p>

<pre><code>var date1 = new Date('7/11/2010');
var date2 = new Date('12/12/2010');
var diffDays = date2.getDate() - date1.getDate(); 
alert(diffDays)
</code></pre>

<p>I tried the above but this did not work.</p>


Get difference between 2 dates in JavaScript?

如何计算两个完整日期之间的差值(我不想要一天中的任何零头)var date1 = new Date('7/11/2010');var date2 = new Date('12/12/2010');var diffDays = date2.getDate() - date1.getDate(); alert(diffDa...

问在JavaScript中获取两个日期之间的差异？
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