blocks|key|1804324|text|var+date+=+new+Date();

date+;+//#+=>+Fri+Apr+01+2011+11:14:50+GMT%2B0200+(CEST)

date.setDate(date.getDate()+-+1);

date+;+//#+=>+Thu+Mar+31+2011+11:14:50+GMT%2B0200+(CEST)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1804325|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 date = new Date();

date ; //# =&gt; Fri Apr 01 2011 11:14:50 GMT+0200 (CEST)

date.setDate(date.getDate() - 1);

date ; //# =&gt; Thu Mar 31 2011 11:14:50 GMT+0200 (CEST)
</code></pre>

blocks|key|1804516|text|令人惊讶的是，没有答案指向最简单的跨浏览器解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1804517|去寻找昨天完全相同的时间*|1804518|var+yesterday+=+new+Date(Date.now()+-+86400000);+//+that+is:+24+*+60+*+60+*+1000|code-block|syntax|javascript|1804519|*：如果您的用例不介意日历的不精确性(如夏令时)，这很有效，否则我建议使用https://moment.github.io/luxon/|offset|length|1804520|entityMap|0|LINK|mutability|MUTABLE|url|https://moment.github.io/luxon/^0|0|0|0|11|V|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]]]]

Surprisingly no answer point to the easiest cross browser solution
To find exactly the same time yesterday*:
<pre><code>var yesterday = new Date(Date.now() - 86400000); // that is: 24 * 60 * 60 * 1000
</code></pre>
*: This works well if your use-case doesn't mind potential imprecision with calendar weirdness (like daylight savings), otherwise I'd recommend using <a href="https://moment.github.io/luxon/" rel="noreferrer">https://moment.github.io/luxon/</a>

blocks|key|1589802|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1589803|var+d+=+new+Date();
d.setDate(d.getDate()+-+1);|code-block|syntax|javascript|1589804|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|$]]

Try this 

<pre><code>var d = new Date();
d.setDate(d.getDate() - 1);
</code></pre>

blocks|key|1589870|text|要概括问题并进行其他比较计算，请使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1589871|var+yesterday+=+new+Date((new+Date()).valueOf()+-+1000*60*60*24);|code-block|syntax|javascript|1589872|这将基于"now“的值创建一个新的date对象，该对象是一个整数，表示unix纪元的毫秒减去一天。|1589873|两天前：|1589874|var+twoDaysAgo+=+new+Date((new+Date()).valueOf()+-+1000*60*60*24*2);|1589875|一小时前：|1589876|var+oneHourAgo+=+new+Date((new+Date()).valueOf()+-+1000*60*60);|1589877|entityMap^0|0|0|0|0|0|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]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

To generalize the question and make other diff calculations use:

<pre><code>var yesterday = new Date((new Date()).valueOf() - 1000*60*60*24);
</code></pre>

this creates a new date object based on the value of "now" as an integer which represents the unix epoch in milliseconds subtracting one day.

Two days ago:

<pre><code>var twoDaysAgo = new Date((new Date()).valueOf() - 1000*60*60*24*2);
</code></pre>

An hour ago:

<pre><code>var oneHourAgo = new Date((new Date()).valueOf() - 1000*60*60);
</code></pre>

blocks|key|1804695|text|我使用的是moment库，它非常灵活且易于使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1804696|在您的案例中：|1804697|let+yesterday+=+moment().subtract(1,+'day').toDate();|code-block|syntax|javascript|1804698|entityMap|0|LINK|mutability|MUTABLE|url|https://momentjs.com/^0|5|6|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I use <a href="https://momentjs.com/" rel="noreferrer">moment</a> library, it is very flexible and easy to use.

In your case:

<pre><code>let yesterday = moment().subtract(1, 'day').toDate();
</code></pre>

blocks|key|1590212|text|new+Date(new+Date().setDate(new+Date().getDate()-1))|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1590213|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>new Date(new Date().setDate(new Date().getDate()-1))
</code></pre>

blocks|key|1589815|text|//Create+a+date+object+using+the+current+time
var+now+=+new+Date();

//Subtract+one+day+from+it
now.setDate(now.getDate()-1);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1589816|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>//Create a date object using the current time
var now = new Date();

//Subtract one day from it
now.setDate(now.getDate()-1);
</code></pre>

blocks|key|1589822|text|这将在昨天00:00以分钟精度生成|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1589823|var+d+=+new+Date();
d.setDate(d.getDate()+-+1);
d.setTime(d.getTime()-d.getHours()*3600*1000-d.getMinutes()*60*1000);|code-block|syntax|javascript|1589824|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|$]]

This will produce yesterday at 00:00 with minutes precision

<pre><code>var d = new Date();
d.setDate(d.getDate() - 1);
d.setTime(d.getTime()-d.getHours()*3600*1000-d.getMinutes()*60*1000);
</code></pre>

blocks|key|1804892|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1804893|var+today+=+new+Date();
var+yesterday1+=+new+Date(new+Date().setDate(new+Date().getDate()+-+1));
var+yesterday2+=+new+Date(Date.now()+-+86400000);
var+yesterday3+=+new+Date(Date.now()+-+1000*60*60*24);
var+yesterday4+=+new+Date((new+Date()).valueOf()+-+1000*60*60*24);
console.log("Today:+"%2Btoday);
console.log("Yesterday:+"%2Byesterday1);
console.log("Yesterday:+"%2Byesterday2);
console.log("Yesterday:+"%2Byesterday3);
console.log("Yesterday:+"%2Byesterday4);|code-block|syntax|javascript|1804894|1804895|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|K|8|@]|9|@]|A|$E|F]]|$1|G|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|M|8|@]|9|@]|A|$]]]|I|$]]

<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>var today = new Date();
var yesterday1 = new Date(new Date().setDate(new Date().getDate() - 1));
var yesterday2 = new Date(Date.now() - 86400000);
var yesterday3 = new Date(Date.now() - 1000*60*60*24);
var yesterday4 = new Date((new Date()).valueOf() - 1000*60*60*24);
console.log("Today: "+today);
console.log("Yesterday: "+yesterday1);
console.log("Yesterday: "+yesterday2);
console.log("Yesterday: "+yesterday3);
console.log("Yesterday: "+yesterday4);</code></pre>
</div>
</div>

blocks|key|1589826|text|d.setHours(0,0,0,0);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1589827|会起到作用的|unstyled|1589828|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>d.setHours(0,0,0,0);
</code></pre>

will do the trick

blocks|key|1804987|text|这是一个用于以文本格式YYYY-MM-DD获取昨天日期并处理时区偏移量的一行程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1804988|new+Date(Date.now()+-+1+*+86400000+-+new+Date().getTimezoneOffset()+*+60000).toISOString().split('T')[0]|code-block|syntax|javascript|1804989|它可以明显地更改为返回日期，即x天前的时间。包括时间等。|1804990|​|1804991|console.log(Date())
console.log(new+Date(Date.now()+-+1+*+86400000+-+new+Date().getTimezoneOffset()+*+60000).toISOString().split('T')[0]);+//+"2019-11-11"
console.log(new+Date(Date.now()+-+1+*+86400000+-+new+Date().getTimezoneOffset()+*+60000).toISOString().split('.')[0].replace('T','+'));+//+"2019-11-11+11:11:11"

//+that+is:+[dates]+*+24+*+60+*+60+*+1000+-+offsetinmin+*+60+*+1000++++//+this+is:+[dates]+*+24+*+60+*+60+*+1000+-+offsetinmin+*+60+*+1000|1804992|1804993|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Q|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|R|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|S|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|M|3|J|5|6|7|U|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|O|$]]

Here is a one liner that is used to get yesterdays date in format YYYY-MM-DD in text and handle the timezone offset.

<pre><code>new Date(Date.now() - 1 * 86400000 - new Date().getTimezoneOffset() * 60000).toISOString().split('T')[0]
</code></pre>

It can obviusly changed to return date, x days back in time. To include time etc.

<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>console.log(Date())
console.log(new Date(Date.now() - 1 * 86400000 - new Date().getTimezoneOffset() * 60000).toISOString().split('T')[0]); // "2019-11-11"
console.log(new Date(Date.now() - 1 * 86400000 - new Date().getTimezoneOffset() * 60000).toISOString().split('.')[0].replace('T',' ')); // "2019-11-11 11:11:11"

// that is: [dates] * 24 * 60 * 60 * 1000 - offsetinmin * 60 * 1000 // this is: [dates] * 24 * 60 * 60 * 1000 - offsetinmin * 60 * 1000</code></pre>
</div>
</div>

blocks|key|1590065|text|试一试，对我很管用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1590066|var+today+=+new+Date();
var+yesterday+=+new+Date(today.setDate(today.getDate()+-+1));+`|code-block|syntax|javascript|1590067|这让我得到了昨天的一个date对象|1590068|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|$]]

Give this a try, works for me:

<pre><code>var today = new Date();
var yesterday = new Date(today.setDate(today.getDate() - 1)); `
</code></pre>

This got me a date object back for yesterday

blocks|key|1590207|text|你可以使用momentjs，这对你很有帮助，你可以用这个库做很多事情。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1590208|使用当前计时moment().subtract(1,+'days').toString()获取昨天日期|offset|length|style|CODE|1590209|获取日期以moment().subtract(1,+'days').startOf('day').toString()开头的昨天日期|1590210|entityMap^0|0|6|13|0|5|1I|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

You can use momentjs it is very helpful you can achieve a lot of things with this library.

Get yesterday date with current timing
<code>moment().subtract(1, 'days').toString()</code>

Get yesterday date with a start of the date
<code>moment().subtract(1, 'days').startOf('day').toString()</code>

blocks|key|1804887|text|"Date.now()+-+86400000“在夏令时结束日(当天有25个小时)不起作用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1804888|另一种选择是使用闭包：|1804889|var+d+=+new+goog.date.Date();
d.add(new+goog.date.Interval(0,+0,+-1));|code-block|syntax|javascript|1804890|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|$]]

"Date.now() - 86400000" won't work on the Daylight Saving end day (which has 25 hours that day)

Another option is to use Closure:

<pre><code>var d = new goog.date.Date();
d.add(new goog.date.Interval(0, 0, -1));
</code></pre>

blocks|key|1590527|text|解决边界日期问题(2020，01，01)+->+2019，12，31|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1590528|var+now+=+new+Date();
return+new+Date(now.getMonth()+-+1+===+0+?+now.getFullYear()+-+1+:+now.getFullYear(),
++++++++++++++++now.getDate()+-+1+===+0+?+now.getMonth()+-+1:+now.getMonth(),
++++++++++++++++now.getDate()+-+1);|code-block|syntax|javascript|1590529|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|$]]

solve boundary date problem (2020, 01, 01) -> 2019, 12, 31

<pre><code>var now = new Date();
return new Date(now.getMonth() - 1 === 0 ? now.getFullYear() - 1 : now.getFullYear(),
 now.getDate() - 1 === 0 ? now.getMonth() - 1: now.getMonth(),
 now.getDate() - 1);
</code></pre>

How can I calculate yesterday as a date in JavaScript?

Calculate the date yesterday in JavaScript

如何在JavaScript中将昨天计算为日期？

问在JavaScript中计算昨天的日期
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回答 15

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