moment.js连接日期和时间

Question

我在表单中有四个字段,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).

我使用这些字段的值来获取有关moment.js的日期和时间,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');

我打算在两个日期之间获得秒数的差异,连接起始日期和时间以及结束日期和时间.我试过这样做,但无济于事:

start = initialdate + start_time;
end = enddate + end_time;
tracker = moment.duration( end.diff(start) ).asSeconds();

Answer 1

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>

Answer 2

失败是试图连接值,测试这样的事情:

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);

Answer 3

IMO的一种更清洁的解决方案是使用动量hour和minute吸气剂和吸气剂。

let a = moment()
let b = moment().add(3, 'hour').add(37, 'minute') //b is the time portion
a.hour(b.hour()).minute(b.minute())

Answer 4

[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,
        });