Question

我正在使用momentJS来获取两个日期之间的差异。这是我的代码：

const createdAt = "2019-11-15 09:45:21"; // Sample data from mysql database

// Add time since created
const created = moment(createdAt);
const now = moment();
// get the difference between the moments
const diff = now.diff(created);
//express as a duration
const diffDuration = moment.duration(diff);
const days = diffDuration.days().toString().padStart(2, 0);
const hours = diffDuration.hours().toString().padStart(2, 0);
const minutes = diffDuration.minutes().toString().padStart(2, 0);

使用该代码，我可以正确地获取天，小时和分钟的差异。安装mysql的服务器位于菲律宾，并且createdAt值由mysql自动生成。

现在，当我尝试更改PC的时区时，我得到了不正确的日期差。我得到负值。

我尝试做类似添加utc()的事情：

const created = moment.utc(createdAt);
const now = moment.utc();

我仍然没有得到任何正确的值。我想念什么吗？是否有可能做到这一点？预先感谢。

Answer 1

上述const S = require('sanctuary'); const source = { foo: [{ r: 1 }, { r: 2 }, { r: 3 }], bar: [{ r: 4 }, { r: 5 }, { r: 6 }], } const result = S.pipe([ S.map( prop => { const nullable = S.maybeToNullable(S.value(prop)(source)) return nullable ? S.Just(nullable.map(val => {val['Section'] = prop; return val})) : S.Nothing } ), S.justs, S.reduce(xs => x => [...xs, ...x])([]) ])(['foo', 'bar', 'baz'])时间不是 UTC格式，因此您需要通过添加/减去本地时间（即UTC时间）来更新值。最好将相关日期转换为UTC，然后从那里执行diff。

看看下面的解析和值选项：

createdAt

// utc time now
const utcTime = moment.utc();
console.log(utcTime.toString());

// time recorded at server
const philliTime = moment('2019-11-15 09:45:21', 'YYYY-MM-DD HH:mm:ss');
console.log(philliTime.toString());

// need to add 8 hours as philli is +8 hours
philliTime.add(8, 'h');
console.log(philliTime.toString());

// options using parseZone
const optionBPhilli = moment.parseZone('2019-11-15 09:45:21 +08:00', 'YYYY-MM-DD HH:mm:ss ZZ');
console.log(optionBPhilli.toString());

const optionBUTC = moment.parseZone('2019-11-15 09:45:21 +00:00', 'YYYY-MM-DD HH:mm:ss ZZ');
console.log(optionBUTC.toString());

console.log(optionBPhilli.diff(optionBUTC, 'h'))

有关解析字符串的更多信息，请检查moment docs并查看UTC parsing.

如何使用矩获取不同时区中的日期之间的差异？

1 个答案: