如何仅比较moment.js中的日期 [英] How to compare only date in moment.js

问题描述

我是moment.js的新手。我有一个日期对象，它有一些时间与它相关联。我只想检查该日期是否大于或等于今天的日期， 不包括比较的时间。

I am new to moment.js. I have a date object and it has some time associated with it. I just want to check if that date is greater than or equal to today's date, excluding the time when comparing.

 var dateToCompare = 2015-04-06T18:30:00.000Z

我只想检查dateToCompare是否等于或大于今天的日期。
我已经检查了is.ame of moment.js，但它似乎是字符串而且只是日期部分。但我不想将我的日期转换为字符串或进一步操纵它。因为我担心javascript可能会在将该日期转换为字符串时出现意外情况（例如添加偏移量或dst等），或者可能是我错了。

I just want to check if dateToCompare is equal or greater than today's date. I have checked isSame of moment.js, but it seems to take string and only the date part. But I do not want to convert my date to string or manipulate it further. Because I am worried that javascript may do something unexpected when converting that date to string(like adding the offset or dst,etc), or may be I am wrong.

示例isSame（）from docs

Sample isSame() from docs

moment('2010-10-20').isSame('2010-10-20');

此外，我正在寻找像isSame（）和isAfter（）这样的东西作为一个陈述。

Also I am looking for something like isSame() and isAfter() combined as one statement.

我需要仅使用moment.js进行比较。请不要建议普通的javascript日期比较。

I need to compare using moment.js only.Please do not suggest plain javascript date comparison.

推荐答案

文档非常清楚您传递了第二个参数来指定粒度。

The docs are pretty clear that you pass in a second parameter to specify granularity.

如果要将粒度限制为毫秒以外的单位，请将单位作为第二个参数传递。

If you want to limit the granularity to a unit other than milliseconds, pass the units as the second parameter.

moment('2010-10-20').isAfter('2010-01-01', 'year'); // false
moment('2010-10-20').isAfter('2009-12-31', 'year'); // true

第二个参数确定精度，而不仅仅是要检查的单个值，使用一天将检查年，月和日。

As the second parameter determines the precision, and not just a single value to check, using day will check for year, month and day.

对于您的情况，您将通过'day'作为第二个参数。

For your case you would pass 'day' as the second parameter.

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