使用javascript将日期和分钟添加到日期 [英] Adding hours and minutes to a date with javascript

问题描述

我正在根据世界各地的时区建立会议日历。我的问题是如何在Javascript中添加或减去用户选择日期的时区。

I am building a meeting calendar based on time zones around the world. My problem is how to add or subtract the time zone from the user selected date in Javascript.

例如，在选择表单上，用户将从中选择日期形式：然后我会得到结果并转换为如下日期......

For example, on the select form, the user will select the date from a form: I would then get the results and convert to a date as below...

var ldSelectDate = new Date(document.form1.year.value,
           document.form1.month.value,
           document.form1.day.value);

我想在此对象中添加12午夜。

I would like to add 12 midnight to this object.

然后我读入一个XML，它在两个城市之间的字符串中获得时区差异：例如喀布尔的+0430或纽约的-0400（夏令时）。这是基于GMT，。

I then read in an XML that gets the time zone difference in a string between two cities: such as "+0430" for Kabul or "-0400" for New York (on daylight savings time). This is based on GMT,.

然后我计算两个城市之间的时区差异：它将返回字符串830。 （我假设我必须将它作为日期对象返回？）。我完成了这部分返回一个字符串。我正在使用字符串。

I then calculate the time zone difference between the two cities: which will return the string of "830". (I assume I have to return this as a date object?). I got this part done returning a string. I'm working with strings.

然后，我希望在一天中的24小时内完成循环，将喀布尔设置为午夜12点，然后循环播放。我很可能想到这一点 - 也就是说，在我循环时将日期设置为整个小时。

I then want to loop through the 24 hours of the day, set Kabul at 12 midnight and then loop through. I can most likely figure this out - that is, set the date with the whole hours as I loop.

我的问题是从喀布尔无痛地减去830看到会议时间将在纽约举行。

My problem is painlessly subtract the "830" from Kabul to see what the meeting time will be in New York.

如果我能从喀布尔时间中减去小时数和分钟数，那将是理想的选择。我注意到有人在javascript中减去了小时数，但没有减去分钟数。顺便说一下，那篇文章对我不起作用。

It will be ideal if I can just subtract the hours and the minutes from the Kabul time. I noticed on here someone subtracting the hours in javascript, but not the minutes. BTW, that post didn't work for me.

我用没有分钟的字符串做了这个，但是我搞砸了会议记录。必须有一个更简单的方法。

I did this with strings without the minutes, but I mess up with the minutes. There has to be an easier way.

我会采用本机Javascript或jQuery的解决方案。

I would take a solution in either native Javascript or jQuery.

同样，我需要在特定日期减去/添加小时和分钟的时区差异。

Again, I need to subtract/add the time zone difference in hours and minutes to a certain date.

谢谢

推荐答案

date.setMinutes(date.getMinutes()+minutesToAdd);

上面的代码会将您的日期对象提前设置为minutesToAdd变量中的分钟数

The above code will set your date object ahead by the amount of minutes in the minutesToAdd variable

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