Javascript 用momentJS比较2个日期
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Comparing 2 dates with momentJS
提问by Geraint
I am trying to compare a DAY/TIME e.g. Monday 09:00:00 with the current time to see if I am past that point in the week. e.g. If it is now 05:00:00 on Monday it should return true however it is returning false everytime
我正在尝试将 DAY/TIME（例如，星期一 09:00:00）与当前时间进行比较，以查看我是否超过了一周中的那个时间点。例如，如果现在是周一的 05:00:00，它应该返回 true 但是它每次都返回 false
var dayTime = Moment("Wednesday 17:00:00", "dddd HH:mm:ss");
var now = Moment(Moment.now(), "dddd HH:mm:ss");
console.log(Moment.utc(dayTime).isBefore(now)); //returns false all the time
I found the following similar questions but it didn't seem to fix the issue after formatting the time.
我发现了以下类似的问题，但在格式化时间后似乎没有解决问题。
Comparing two times with Moment JS
When I replace the moment.now()with a string such as "Wednesday 17:00:00" it returns the expected result.
当我用moment.now()诸如“Wednesday 17:00:00”之类的字符串替换它时，它会返回预期的结果。
Any idea what I need to do to moment.now()in order for this to work correctly?
知道我需要做什么moment.now()才能使其正常工作吗？
采纳答案by Geraint
For anyone who is interested, the code I posted in my question was changing the day/hour but was setting the year to 2015 which meant that it was always in the past.
对于任何感兴趣的人，我在问题中发布的代码正在更改日期/小时，但将年份设置为 2015 年，这意味着它始终是过去。
To fix I separated out the Day and the Hour and set to moment. Then compared that with now. e.g.
为了解决这个问题，我将日期和时间分开并设置为时刻。然后和现在相比。例如
moment().set({"Day": "Friday", "Hour": "17"}).isBefore(moment())
回答by Maggie Pint
Moment.now can be used as an extension point, but it's really not a public API. To get the current time in momentjs you just call moment(). Note that all moment calls use lowercase moment.
Moment.now 可以用作扩展点，但它实际上不是公共 API。要在 momentjs 中获取当前时间，您只需调用moment(). 请注意，所有时刻调用都使用小写moment。
To see if your date and time is before the current time, you would just call:
要查看您的日期和时间是否在当前时间之前，您只需调用：
moment('01/01/2016', 'MM/DD/YYYY').isBefore(moment())
You would replace the date and format in question with your own.
您可以用您自己的日期和格式替换有问题的日期和格式。
I see that you have a date format that includes only day of week and time. Moment will parse this, but be aware that the behavior might not be what you expect. When I parse your date, I get Wednesday December 30, 2015. Exactly what day this lands on will vary by locale. In any case, I doubt that it is what you want. If at all possible, I would get year, month, and day.
我看到您的日期格式仅包含星期几和时间。Moment 会对此进行解析，但请注意该行为可能不是您所期望的。当我解析你的日期时，我得到 2015 年 12 月 30 日星期三。具体哪一天会因地区而异。无论如何，我怀疑这是你想要的。如果可能的话，我会得到年、月和日。
If you would like to instead set the moment to Wednesday this week, set the day on the moment using .day(). For instance:
如果您想将这一时刻设置为本周的星期三，请使用 将这一时刻设置为星期三.day()。例如：
moment().day(3).format()
"2016-06-15T20:19:55-05:00"
