使用 luxon 库显示相对于给定的时间
Displaying time relative to a given using luxon library
luxon 是否支持显示相对于给定时间的功能?
Moment 具有 "Calendar time" 个特征:
https://momentjs.com/docs/#/displaying/calendar-time/
moment().calendar(null, {
sameDay: '[Today]',
nextDay: '[Tomorrow]',
nextWeek: 'dddd',
lastDay: '[Yesterday]',
lastWeek: '[Last] dddd',
sameElse: 'DD/MM/YYYY'
});
我可以使用 luxon 实现同样的效果吗?
来自版本 1.9.0
you can use toRelativeCalendar
:
Returns a string representation this date relative to today, such as "yesterday" or "next month" platform supports Intl.RelativeDateFormat
.
const DateTime = luxon.DateTime;
const now = DateTime.local();
// Some test values
[ now,
now.plus({days: 1}),
now.plus({days: 4}),
now.minus({days: 1}),
now.minus({days: 4}),
now.minus({days: 20}),
].forEach((k) => {
console.log( k.toRelativeCalendar() );
});
<script src="https://cdn.jsdelivr.net/npm/luxon@1.10.0/build/global/luxon.js"></script>
在版本 1.9.0
之前,Luxon 中没有 calendar()
等价物。
For Moment users manual page stated in the DateTime method equivalence => Output => Humanization 部分:
Luxon doesn't support these, and won't until the Relative Time Format proposal lands in browsers.
Operation | Moment | Luxon
---------------------------------------------------------------------------------------
"Calendar time" | calendar() | None (before 1.9.0) / toRelativeCalendar() (after 1.9.0)
如果需要,可以自己写点东西,这里是一个自定义函数的例子,和moment的输出类似calendar()
:
const DateTime = luxon.DateTime;
function getCalendarFormat(myDateTime, now) {
var diff = myDateTime.diff(now.startOf("day"), 'days').as('days');
return diff < -6 ? 'sameElse' :
diff < -1 ? 'lastWeek' :
diff < 0 ? 'lastDay' :
diff < 1 ? 'sameDay' :
diff < 2 ? 'nextDay' :
diff < 7 ? 'nextWeek' : 'sameElse';
}
function myCalendar(dt1, dt2, obj){
const format = getCalendarFormat(dt1, dt2) || 'sameElse';
return dt1.toFormat(obj[format]);
}
const now = DateTime.local();
const fmtObj = {
sameDay: "'Today'",
nextDay: "'Tomorrow'",
nextWeek: 'EEEE',
lastDay: "'Yesterday'",
lastWeek: "'Last' EEEE",
sameElse: 'dd/MM/yyyy'
};
// Some test values
[ now,
now.plus({days: 1}),
now.plus({days: 4}),
now.minus({days: 1}),
now.minus({days: 4}),
now.minus({days: 20}),
].forEach((k) => {
console.log( myCalendar(now, k, fmtObj) );
});
<script src="https://cdn.jsdelivr.net/npm/luxon@1.8.2/build/global/luxon.js"></script>
这段代码大致灵感来源于code,肯定可以改进。
luxon 是否支持显示相对于给定时间的功能?
Moment 具有 "Calendar time" 个特征:
https://momentjs.com/docs/#/displaying/calendar-time/
moment().calendar(null, {
sameDay: '[Today]',
nextDay: '[Tomorrow]',
nextWeek: 'dddd',
lastDay: '[Yesterday]',
lastWeek: '[Last] dddd',
sameElse: 'DD/MM/YYYY'
});
我可以使用 luxon 实现同样的效果吗?
来自版本 1.9.0
you can use toRelativeCalendar
:
Returns a string representation this date relative to today, such as "yesterday" or "next month" platform supports
Intl.RelativeDateFormat
.
const DateTime = luxon.DateTime;
const now = DateTime.local();
// Some test values
[ now,
now.plus({days: 1}),
now.plus({days: 4}),
now.minus({days: 1}),
now.minus({days: 4}),
now.minus({days: 20}),
].forEach((k) => {
console.log( k.toRelativeCalendar() );
});
<script src="https://cdn.jsdelivr.net/npm/luxon@1.10.0/build/global/luxon.js"></script>
在版本 1.9.0
之前,Luxon 中没有 calendar()
等价物。
For Moment users manual page stated in the DateTime method equivalence => Output => Humanization 部分:
Luxon doesn't support these, and won't until the Relative Time Format proposal lands in browsers.
Operation | Moment | Luxon
---------------------------------------------------------------------------------------
"Calendar time" | calendar() | None (before 1.9.0) / toRelativeCalendar() (after 1.9.0)
如果需要,可以自己写点东西,这里是一个自定义函数的例子,和moment的输出类似calendar()
:
const DateTime = luxon.DateTime;
function getCalendarFormat(myDateTime, now) {
var diff = myDateTime.diff(now.startOf("day"), 'days').as('days');
return diff < -6 ? 'sameElse' :
diff < -1 ? 'lastWeek' :
diff < 0 ? 'lastDay' :
diff < 1 ? 'sameDay' :
diff < 2 ? 'nextDay' :
diff < 7 ? 'nextWeek' : 'sameElse';
}
function myCalendar(dt1, dt2, obj){
const format = getCalendarFormat(dt1, dt2) || 'sameElse';
return dt1.toFormat(obj[format]);
}
const now = DateTime.local();
const fmtObj = {
sameDay: "'Today'",
nextDay: "'Tomorrow'",
nextWeek: 'EEEE',
lastDay: "'Yesterday'",
lastWeek: "'Last' EEEE",
sameElse: 'dd/MM/yyyy'
};
// Some test values
[ now,
now.plus({days: 1}),
now.plus({days: 4}),
now.minus({days: 1}),
now.minus({days: 4}),
now.minus({days: 20}),
].forEach((k) => {
console.log( myCalendar(now, k, fmtObj) );
});
<script src="https://cdn.jsdelivr.net/npm/luxon@1.8.2/build/global/luxon.js"></script>
这段代码大致灵感来源于code,肯定可以改进。