我正在尝试使用JavaScript从给定的日期时间字符串中减去小时。 我的代码如下:
var cbTime = new Date(); cbTime = selectedTime.setHours(-5.5);其中 selectedTime 是给定时间(时间
所以假设 selectedTime 是 9月16日星期二: 15:16 UTC + 0530 2014 我得到的是: 1410875116995
<我想用日期时间格式回答。 我在这里做错了吗?还是有其他解决方案?解决方案原因是 setHours(), setMinutes()等,以 Integer 作为参数。从 docs :
...
setMinutes()方法根据当地时间设置指定日期的分钟。
...
参数:
0到59之间的整数,代表分钟。
因此,您可以执行以下操作:
var selectedTime = new Date(),cbTime = new Date(); cbTime.setHours(selectedTime.getHours()-5); cbTime.setMinutes(selectedTime.getMinutes()-30); document.write('cbTime:'+ cbTime); document.write('< br>'); document.write('selectedTime:'+ selectedTime);
I am trying to subtract hours from a given date time string using javascript. My code is like:
var cbTime = new Date(); cbTime = selectedTime.setHours(-5.5);Where selectedTime is the given time (time that i pass as parameter).
So suppose selectedTime is Tue Sep 16 19:15:16 UTC+0530 2014 Ans I get is : 1410875116995
I want answer in datetime format. Am I doing something wrong here? Or there is some other solution?
解决方案The reason is that setHours(), setMinutes(), etc, take an Integer as a parameter. From the docs:
...
The setMinutes() method sets the minutes for a specified date according to local time.
...
Parameters:
An integer between 0 and 59, representing the minutes.
So, you could do this:
var selectedTime = new Date(), cbTime = new Date(); cbTime.setHours(selectedTime.getHours() - 5); cbTime.setMinutes(selectedTime.getMinutes() - 30); document.write('cbTime: ' + cbTime); document.write('<br>'); document.write('selectedTime: ' + selectedTime);
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