Javascript moment.js 连接日期和时间
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moment.js concatenate date and time
提问by grankan
I have four fields in a form, some containing an initial date and the end date (dd / mm / yyyy) and the others contain the start time and the end time (hh: ss).
我在一个表单中有四个字段，一些包含初始日期和结束日期 (dd / mm / yyyy)，其他包含开始时间和结束时间 (hh: ss)。
The value of these fields I use to get the date and time with moment.js such as this:
我用来通过 moment.js 获取日期和时间的这些字段的值，例如：
initialdate = moment( $('input#start_date').val(), 'DD/MM/YYYY' );
start_time = moment( $('input#start_time').val(), 'HH:mm');
enddate = moment( $('input#enddate').val(), 'DD/MM/YYYY' );
end_time = moment( $('input#end_time').val(), 'HH:mm');
What I intend is to then get the difference in seconds between the two dates, concatenating the starting date and time and the ending date and time. I have tried to do this, but to no avail:
我打算然后获得两个日期之间的秒差，连接开始日期和时间以及结束日期和时间。我试图这样做，但无济于事：
start = initialdate + start_time;
end = enddate + end_time;
tracker = moment.duration( end.diff(start) ).asSeconds();
采纳答案by mehparra
The fail is trying on concatenate the values, test with something like this:
失败是尝试连接值，使用以下内容进行测试：
let initialdate = '2016-10-01';
let start_time = '19:04:10';
let enddate = '2016-10-01';
let end_time = '19:04:20';
let datetimeA = moment(initialdate + " " + start_time);
let datetimeB = moment(enddate + " " + end_time);
console.log(datetimeA.format());
console.log(datetimeB.format());
let datetimeC = datetimeB.diff(datetimeA, 'seconds');
console.log(datetimeC);
回答by RobG
Concatenate the date and time strings and parse them as one, e.g.
连接日期和时间字符串并将它们解析为一个，例如
var date = '23/02/2017';
var time = '15:42';
var dateTime = moment(date + ' ' + time, 'DD/MM/YYYY HH:mm');
console.log(dateTime.format('YYYY-MM-DD HH:mm'))<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment.js"></script>回答by ahota
A much cleaner solution IMO is to use moment's hourand minutegetters and setters.
IMO 更简洁的解决方案是使用 momenthour和minutegetter 和 setter。
let a = moment()
let b = moment().add(3, 'hour').add(37, 'minute') //b is the time portion
a.hour(b.hour()).minute(b.minute())
回答by Sergei Volynkin
[2019] Most elegant solution is:
[2019] 最优雅的解决方案是：
/* "date" and "time" are instances of Moment */
date = date.set({
hour: time.get('hour'),
minute: time.get('minute'),
second: 0,
millisecond: 0,
});
