如何获得两个日期对象之间的小时差异？ [重复]

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Get difference between 2 dates in JavaScript? [duplicate] 7 answers
在JavaScript中2个日期之间的差异？ [重复] 7个答案

I got two Date objects and I want to calculate the difference in hours.

我有两个Date对象，我想计算小时数的差异。

If the difference in hours is less than 18 hours, I want to push the date object into an array.

如果小时差异小于18小时，我想将日期对象推送到数组中。

Javascript / jQuery, doesn't really matter; what works the best will do.

Javascript / jQuery，并不重要;什么是最好的将做。

3 个解决方案

#1

118

The simplest way would be to directly subtract the date objects from one another.

最简单的方法是直接从彼此中减去日期对象。

For example:

例如：

var hours = Math.abs(date1 - date2) / 36e5;

The subtraction returns the difference between the two dates in milliseconds. 36e5 is the scientific notation for 60*60*1000, dividing by which converts the milliseconds difference into hours.

减法返回两个日期之间的差异，以毫秒为单位。 36e5是60 * 60 * 1000的科学记数法，除以将毫秒差异转换为小时。

#2

Try using getTime (mdn doc) :

尝试使用getTime（mdn doc）：

var diff = Math.abs(date1.getTime() - date2.getTime()) / 3600000;
if (diff < 18) { /* do something */ }

Using Math.abs() we don't know which date is the smallest. This code is probably more relevant :

使用Math.abs（）我们不知道哪个日期最小。这段代码可能更相关：

var diff = (date1 - date2) / 3600000;
if (diff < 18) { array.push(date1); }

#3

Use the timestamp you get by calling valueOf on the date object:

使用在日期对象上调用valueOf获得的时间戳：

var diff = date2.valueOf() - date1.valueOf();
var diffInHours = diff/1000/60/60; // Convert milliseconds to hours

#1

118